Finding the Fourth Proportional to 42,877,667.79, 64,280,327.31 and 18,598,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,877,667.79 : 64,280,327.31 = 18,598,315.50 : x
2. Step 2: Convert to fraction form
   42,877,667.79/64,280,327.31 = 18,598,315.50/x
3. Step 3: Cross multiply
   42,877,667.79x = 64,280,327.31 × 18,598,315.50
4. Step 4: Simplify right side
   42,877,667.79x = 1,195,505,807,754,646.25
5. Step 5: Solve for x
   x = 1,195,505,807,754,646.25/42,877,667.79
6. Step 6: Final answer
   x = 27,881,782.51