Finding the Fourth Proportional to 88,641.12, 132,649.64 and 55,376.88

Step by Step Solution

1. Step 1: Write the proportion equation
   88,641.12 : 132,649.64 = 55,376.88 : x
2. Step 2: Convert to fraction form
   88,641.12/132,649.64 = 55,376.88/x
3. Step 3: Cross multiply
   88,641.12x = 132,649.64 × 55,376.88
4. Step 4: Simplify right side
   88,641.12x = 7,345,723,196.32
5. Step 5: Solve for x
   x = 7,345,723,196.32/88,641.12
6. Step 6: Final answer
   x = 82,870.38