Finding the Fourth Proportional to 88,473.60, 132,068.86 and 81,888.22

Step by Step Solution

1. Step 1: Write the proportion equation
   88,473.60 : 132,068.86 = 81,888.22 : x
2. Step 2: Convert to fraction form
   88,473.60/132,068.86 = 81,888.22/x
3. Step 3: Cross multiply
   88,473.60x = 132,068.86 × 81,888.22
4. Step 4: Simplify right side
   88,473.60x = 10,814,883,862.83
5. Step 5: Solve for x
   x = 10,814,883,862.83/88,473.60
6. Step 6: Final answer
   x = 122,238.54