Finding the Fourth Proportional to 112,400.52, 155,128.96 and 67,080.42

Step by Step Solution

1. Step 1: Write the proportion equation
   112,400.52 : 155,128.96 = 67,080.42 : x
2. Step 2: Convert to fraction form
   112,400.52/155,128.96 = 67,080.42/x
3. Step 3: Cross multiply
   112,400.52x = 155,128.96 × 67,080.42
4. Step 4: Simplify right side
   112,400.52x = 10,406,115,790.96
5. Step 5: Solve for x
   x = 10,406,115,790.96/112,400.52
6. Step 6: Final answer
   x = 92,580.67