Finding the Fourth Proportional to 112,607.25, 155,399.97 and 61,624.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,607.25 : 155,399.97 = 61,624.50 : x
2. Step 2: Convert to fraction form
   112,607.25/155,399.97 = 61,624.50/x
3. Step 3: Cross multiply
   112,607.25x = 155,399.97 × 61,624.50
4. Step 4: Simplify right side
   112,607.25x = 9,576,445,099.61
5. Step 5: Solve for x
   x = 9,576,445,099.61/112,607.25
6. Step 6: Final answer
   x = 85,042.89