Finding the Fourth Proportional to 112,684.93, 155,499.28 and 61,687.89

Step by Step Solution

1. Step 1: Write the proportion equation
   112,684.93 : 155,499.28 = 61,687.89 : x
2. Step 2: Convert to fraction form
   112,684.93/155,499.28 = 61,687.89/x
3. Step 3: Cross multiply
   112,684.93x = 155,499.28 × 61,687.89
4. Step 4: Simplify right side
   112,684.93x = 9,592,422,479.72
5. Step 5: Solve for x
   x = 9,592,422,479.72/112,684.93
6. Step 6: Final answer
   x = 85,126.05