Finding the Fourth Proportional to 112,684.43, 155,498.59 and 61,687.39

Step by Step Solution

1. Step 1: Write the proportion equation
   112,684.43 : 155,498.59 = 61,687.39 : x
2. Step 2: Convert to fraction form
   112,684.43/155,498.59 = 61,687.39/x
3. Step 3: Cross multiply
   112,684.43x = 155,498.59 × 61,687.39
4. Step 4: Simplify right side
   112,684.43x = 9,592,301,931.25
5. Step 5: Solve for x
   x = 9,592,301,931.25/112,684.43
6. Step 6: Final answer
   x = 85,125.35