Finding the Fourth Proportional to 88,111.32, 121,426.02 and 86,492.04

Step by Step Solution

1. Step 1: Write the proportion equation
   88,111.32 : 121,426.02 = 86,492.04 : x
2. Step 2: Convert to fraction form
   88,111.32/121,426.02 = 86,492.04/x
3. Step 3: Cross multiply
   88,111.32x = 121,426.02 × 86,492.04
4. Step 4: Simplify right side
   88,111.32x = 10,502,384,178.88
5. Step 5: Solve for x
   x = 10,502,384,178.88/88,111.32
6. Step 6: Final answer
   x = 119,194.49