Finding the Fourth Proportional to 88,498.40, 122,008.38 and 85,746.56

Step by Step Solution

1. Step 1: Write the proportion equation
   88,498.40 : 122,008.38 = 85,746.56 : x
2. Step 2: Convert to fraction form
   88,498.40/122,008.38 = 85,746.56/x
3. Step 3: Cross multiply
   88,498.40x = 122,008.38 × 85,746.56
4. Step 4: Simplify right side
   88,498.40x = 10,461,798,876.17
5. Step 5: Solve for x
   x = 10,461,798,876.17/88,498.40
6. Step 6: Final answer
   x = 118,214.55