Finding the Fourth Proportional to 72,146,994.99, 99,564,128.55 and 39,108,341.38

Step by Step Solution

1. Step 1: Write the proportion equation
   72,146,994.99 : 99,564,128.55 = 39,108,341.38 : x
2. Step 2: Convert to fraction form
   72,146,994.99/99,564,128.55 = 39,108,341.38/x
3. Step 3: Cross multiply
   72,146,994.99x = 99,564,128.55 × 39,108,341.38
4. Step 4: Simplify right side
   72,146,994.99x = 3,893,787,928,363,287.50
5. Step 5: Solve for x
   x = 3,893,787,928,363,287.50/72,146,994.99
6. Step 6: Final answer
   x = 53,970,202.48