Finding the Fourth Proportional to 111,077.76, 153,127.85 and 79,191.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,077.76 : 153,127.85 = 79,191.30 : x
2. Step 2: Convert to fraction form
   111,077.76/153,127.85 = 79,191.30/x
3. Step 3: Cross multiply
   111,077.76x = 153,127.85 × 79,191.30
4. Step 4: Simplify right side
   111,077.76x = 12,126,393,111.75
5. Step 5: Solve for x
   x = 12,126,393,111.75/111,077.76
6. Step 6: Final answer
   x = 109,170.31