Finding the Fourth Proportional to 112,399.55, 155,109.56 and 61,411.18

Step by Step Solution

1. Step 1: Write the proportion equation
   112,399.55 : 155,109.56 = 61,411.18 : x
2. Step 2: Convert to fraction form
   112,399.55/155,109.56 = 61,411.18/x
3. Step 3: Cross multiply
   112,399.55x = 155,109.56 × 61,411.18
4. Step 4: Simplify right side
   112,399.55x = 9,525,460,414.05
5. Step 5: Solve for x
   x = 9,525,460,414.05/112,399.55
6. Step 6: Final answer
   x = 84,746.43