Finding the Fourth Proportional to 72,331,329.12, 99,805,401.78 and 42,587,042.81

Step by Step Solution

1. Step 1: Write the proportion equation
   72,331,329.12 : 99,805,401.78 = 42,587,042.81 : x
2. Step 2: Convert to fraction form
   72,331,329.12/99,805,401.78 = 42,587,042.81/x
3. Step 3: Cross multiply
   72,331,329.12x = 99,805,401.78 × 42,587,042.81
4. Step 4: Simplify right side
   72,331,329.12x = 4,250,416,917,775,083
5. Step 5: Solve for x
   x = 4,250,416,917,775,083/72,331,329.12
6. Step 6: Final answer
   x = 58,763,152.42