Finding the Fourth Proportional to 88,498.21, 122,008.12 and 85,746.37

Step by Step Solution

1. Step 1: Write the proportion equation
   88,498.21 : 122,008.12 = 85,746.37 : x
2. Step 2: Convert to fraction form
   88,498.21/122,008.12 = 85,746.37/x
3. Step 3: Cross multiply
   88,498.21x = 122,008.12 × 85,746.37
4. Step 4: Simplify right side
   88,498.21x = 10,461,753,400.52
5. Step 5: Solve for x
   x = 10,461,753,400.52/88,498.21
6. Step 6: Final answer
   x = 118,214.29