Finding the Fourth Proportional to 42,987.92, 59,314.17 and 25,988.78

Step by Step Solution

1. Step 1: Write the proportion equation
   42,987.92 : 59,314.17 = 25,988.78 : x
2. Step 2: Convert to fraction form
   42,987.92/59,314.17 = 25,988.78/x
3. Step 3: Cross multiply
   42,987.92x = 59,314.17 × 25,988.78
4. Step 4: Simplify right side
   42,987.92x = 1,541,503,160.76
5. Step 5: Solve for x
   x = 1,541,503,160.76/42,987.92
6. Step 6: Final answer
   x = 35,858.99