Finding the Fourth Proportional to 59,781.36, 88,966.31 and 57,788.16

Step by Step Solution

1. Step 1: Write the proportion equation
   59,781.36 : 88,966.31 = 57,788.16 : x
2. Step 2: Convert to fraction form
   59,781.36/88,966.31 = 57,788.16/x
3. Step 3: Cross multiply
   59,781.36x = 88,966.31 × 57,788.16
4. Step 4: Simplify right side
   59,781.36x = 5,141,199,067.95
5. Step 5: Solve for x
   x = 5,141,199,067.95/59,781.36
6. Step 6: Final answer
   x = 86,000.04