Finding the Fourth Proportional to 112,399.42, 155,109.38 and 61,411.06

Step by Step Solution

1. Step 1: Write the proportion equation
   112,399.42 : 155,109.38 = 61,411.06 : x
2. Step 2: Convert to fraction form
   112,399.42/155,109.38 = 61,411.06/x
3. Step 3: Cross multiply
   112,399.42x = 155,109.38 × 61,411.06
4. Step 4: Simplify right side
   112,399.42x = 9,525,430,666.20
5. Step 5: Solve for x
   x = 9,525,430,666.20/112,399.42
6. Step 6: Final answer
   x = 84,746.27