Finding the Fourth Proportional to 88,417, 132,649.80 and 26,087.50

Step by Step Solution

1. Step 1: Write the proportion equation
   88,417 : 132,649.80 = 26,087.50 : x
2. Step 2: Convert to fraction form
   88,417/132,649.80 = 26,087.50/x
3. Step 3: Cross multiply
   88,417x = 132,649.80 × 26,087.50
4. Step 4: Simplify right side
   88,417x = 3,460,501,657.50
5. Step 5: Solve for x
   x = 3,460,501,657.50/88,417
6. Step 6: Final answer
   x = 39,138.42