Finding the Fourth Proportional to 112,390.40, 155,087.52 and 62,086.16

Step by Step Solution

1. Step 1: Write the proportion equation
   112,390.40 : 155,087.52 = 62,086.16 : x
2. Step 2: Convert to fraction form
   112,390.40/155,087.52 = 62,086.16/x
3. Step 3: Cross multiply
   112,390.40x = 155,087.52 × 62,086.16
4. Step 4: Simplify right side
   112,390.40x = 9,628,788,580.72
5. Step 5: Solve for x
   x = 9,628,788,580.72/112,390.40
6. Step 6: Final answer
   x = 85,672.70