Finding the Fourth Proportional to 152,689.47, 228,885.27 and 72,705.96

Step by Step Solution

1. Step 1: Write the proportion equation
   152,689.47 : 228,885.27 = 72,705.96 : x
2. Step 2: Convert to fraction form
   152,689.47/228,885.27 = 72,705.96/x
3. Step 3: Cross multiply
   152,689.47x = 228,885.27 × 72,705.96
4. Step 4: Simplify right side
   152,689.47x = 16,641,323,285.21
5. Step 5: Solve for x
   x = 16,641,323,285.21/152,689.47
6. Step 6: Final answer
   x = 108,988.02