Finding the Fourth Proportional to 147,402.24, 221,081.76 and 72,502.28

Step by Step Solution

1. Step 1: Write the proportion equation
   147,402.24 : 221,081.76 = 72,502.28 : x
2. Step 2: Convert to fraction form
   147,402.24/221,081.76 = 72,502.28/x
3. Step 3: Cross multiply
   147,402.24x = 221,081.76 × 72,502.28
4. Step 4: Simplify right side
   147,402.24x = 16,028,931,666.41
5. Step 5: Solve for x
   x = 16,028,931,666.41/147,402.24
6. Step 6: Final answer
   x = 108,742.80