Finding the Fourth Proportional to 147,357.30, 220,890.15 and 72,416.10

Step by Step Solution

1. Step 1: Write the proportion equation
   147,357.30 : 220,890.15 = 72,416.10 : x
2. Step 2: Convert to fraction form
   147,357.30/220,890.15 = 72,416.10/x
3. Step 3: Cross multiply
   147,357.30x = 220,890.15 × 72,416.10
4. Step 4: Simplify right side
   147,357.30x = 15,996,003,191.42
5. Step 5: Solve for x
   x = 15,996,003,191.42/147,357.30
6. Step 6: Final answer
   x = 108,552.50