Finding the Fourth Proportional to 101,599.30, 140,474.46 and 88,987.78

Step by Step Solution

1. Step 1: Write the proportion equation
   101,599.30 : 140,474.46 = 88,987.78 : x
2. Step 2: Convert to fraction form
   101,599.30/140,474.46 = 88,987.78/x
3. Step 3: Cross multiply
   101,599.30x = 140,474.46 × 88,987.78
4. Step 4: Simplify right side
   101,599.30x = 12,500,510,342.10
5. Step 5: Solve for x
   x = 12,500,510,342.10/101,599.30
6. Step 6: Final answer
   x = 123,037.37