Finding the Fourth Proportional to 171,872,914.74, 257,806,820.55 and 42,480,517.74

Step by Step Solution

1. Step 1: Write the proportion equation
   171,872,914.74 : 257,806,820.55 = 42,480,517.74 : x
2. Step 2: Convert to fraction form
   171,872,914.74/257,806,820.55 = 42,480,517.74/x
3. Step 3: Cross multiply
   171,872,914.74x = 257,806,820.55 × 42,480,517.74
4. Step 4: Simplify right side
   171,872,914.74x = 10,951,767,213,867,272
5. Step 5: Solve for x
   x = 10,951,767,213,867,272/171,872,914.74
6. Step 6: Final answer
   x = 63,720,145.96