Finding the Fourth Proportional to 21,488,612,374,662, 32,200,119,327,380 and 12,758,597,171,028

Step by Step Solution

1. Step 1: Write the proportion equation
   21,488,612,374,662 : 32,200,119,327,380 = 12,758,597,171,028 : x
2. Step 2: Convert to fraction form
   21,488,612,374,662/32,200,119,327,380 = 12,758,597,171,028/x
3. Step 3: Cross multiply
   21,488,612,374,662x = 32,200,119,327,380 × 12,758,597,171,028
4. Step 4: Simplify right side
   21,488,612,374,662x = 410,828,351,357,074,499,656,744,960
5. Step 5: Solve for x
   x = 410,828,351,357,074,499,656,744,960/21,488,612,374,662
6. Step 6: Final answer
   x = 19,118,421,617,651.64