Finding the Fourth Proportional to 72,715.32, 108,961.20 and 43,074.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,715.32 : 108,961.20 = 43,074.18 : x
2. Step 2: Convert to fraction form
   72,715.32/108,961.20 = 43,074.18/x
3. Step 3: Cross multiply
   72,715.32x = 108,961.20 × 43,074.18
4. Step 4: Simplify right side
   72,715.32x = 4,693,414,341.82
5. Step 5: Solve for x
   x = 4,693,414,341.82/72,715.32
6. Step 6: Final answer
   x = 64,545.06