Finding the Fourth Proportional to 88,142.10, 132,407.55 and 84,837.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,142.10 : 132,407.55 = 84,837.30 : x
2. Step 2: Convert to fraction form
   88,142.10/132,407.55 = 84,837.30/x
3. Step 3: Cross multiply
   88,142.10x = 132,407.55 × 84,837.30
4. Step 4: Simplify right side
   88,142.10x = 11,233,099,041.62
5. Step 5: Solve for x
   x = 11,233,099,041.62/88,142.10
6. Step 6: Final answer
   x = 127,443.06