Finding the Fourth Proportional to 72,035,581.62, 108,056,362.41 and 20,917,600.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,035,581.62 : 108,056,362.41 = 20,917,600.50 : x
2. Step 2: Convert to fraction form
   72,035,581.62/108,056,362.41 = 20,917,600.50/x
3. Step 3: Cross multiply
   72,035,581.62x = 108,056,362.41 × 20,917,600.50
4. Step 4: Simplify right side
   72,035,581.62x = 2,260,279,820,375,597
5. Step 5: Solve for x
   x = 2,260,279,820,375,597/72,035,581.62
6. Step 6: Final answer
   x = 31,377,268.98