Finding the Fourth Proportional to 88,387.29, 122,016.17 and 56,574.63

Step by Step Solution

1. Step 1: Write the proportion equation
   88,387.29 : 122,016.17 = 56,574.63 : x
2. Step 2: Convert to fraction form
   88,387.29/122,016.17 = 56,574.63/x
3. Step 3: Cross multiply
   88,387.29x = 122,016.17 × 56,574.63
4. Step 4: Simplify right side
   88,387.29x = 6,903,019,388.89
5. Step 5: Solve for x
   x = 6,903,019,388.89/88,387.29
6. Step 6: Final answer
   x = 78,099.68