Finding the Fourth Proportional to 111,354.16, 153,462.60 and 79,090.20

Step by Step Solution

1. Step 1: Write the proportion equation
   111,354.16 : 153,462.60 = 79,090.20 : x
2. Step 2: Convert to fraction form
   111,354.16/153,462.60 = 79,090.20/x
3. Step 3: Cross multiply
   111,354.16x = 153,462.60 × 79,090.20
4. Step 4: Simplify right side
   111,354.16x = 12,137,387,726.52
5. Step 5: Solve for x
   x = 12,137,387,726.52/111,354.16
6. Step 6: Final answer
   x = 108,998.06