Finding the Fourth Proportional to 72,225,507.71, 99,671,763.89 and 42,448,159.07

Step by Step Solution

1. Step 1: Write the proportion equation
   72,225,507.71 : 99,671,763.89 = 42,448,159.07 : x
2. Step 2: Convert to fraction form
   72,225,507.71/99,671,763.89 = 42,448,159.07/x
3. Step 3: Cross multiply
   72,225,507.71x = 99,671,763.89 × 42,448,159.07
4. Step 4: Simplify right side
   72,225,507.71x = 4,230,882,888,693,616
5. Step 5: Solve for x
   x = 4,230,882,888,693,616/72,225,507.71
6. Step 6: Final answer
   x = 58,578,790.55