Finding the Fourth Proportional to 72,904.01, 99,951.38 and 71,575.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,904.01 : 99,951.38 = 71,575.40 : x
2. Step 2: Convert to fraction form
   72,904.01/99,951.38 = 71,575.40/x
3. Step 3: Cross multiply
   72,904.01x = 99,951.38 × 71,575.40
4. Step 4: Simplify right side
   72,904.01x = 7,154,060,164.46
5. Step 5: Solve for x
   x = 7,154,060,164.46/72,904.01
6. Step 6: Final answer
   x = 98,129.86