Finding the Fourth Proportional to 112,875.15, 155,758.50 and 61,887

Step by Step Solution

1. Step 1: Write the proportion equation
   112,875.15 : 155,758.50 = 61,887 : x
2. Step 2: Convert to fraction form
   112,875.15/155,758.50 = 61,887/x
3. Step 3: Cross multiply
   112,875.15x = 155,758.50 × 61,887
4. Step 4: Simplify right side
   112,875.15x = 9,639,426,289.50
5. Step 5: Solve for x
   x = 9,639,426,289.50/112,875.15
6. Step 6: Final answer
   x = 85,399.01