Finding the Fourth Proportional to 72,338,790.71, 99,836,089.29 and 42,970,239.32

Step by Step Solution

1. Step 1: Write the proportion equation
   72,338,790.71 : 99,836,089.29 = 42,970,239.32 : x
2. Step 2: Convert to fraction form
   72,338,790.71/99,836,089.29 = 42,970,239.32/x
3. Step 3: Cross multiply
   72,338,790.71x = 99,836,089.29 × 42,970,239.32
4. Step 4: Simplify right side
   72,338,790.71x = 4,289,980,649,065,008.50
5. Step 5: Solve for x
   x = 4,289,980,649,065,008.50/72,338,790.71
6. Step 6: Final answer
   x = 59,304,013.89