Finding the Fourth Proportional to 111,048.96, 153,150.68 and 78,719.62

Step by Step Solution

1. Step 1: Write the proportion equation
   111,048.96 : 153,150.68 = 78,719.62 : x
2. Step 2: Convert to fraction form
   111,048.96/153,150.68 = 78,719.62/x
3. Step 3: Cross multiply
   111,048.96x = 153,150.68 × 78,719.62
4. Step 4: Simplify right side
   111,048.96x = 12,055,963,332.34
5. Step 5: Solve for x
   x = 12,055,963,332.34/111,048.96
6. Step 6: Final answer
   x = 108,564.40