Finding the Fourth Proportional to 111,131.18, 153,359.46 and 63,385.34

Step by Step Solution

1. Step 1: Write the proportion equation
   111,131.18 : 153,359.46 = 63,385.34 : x
2. Step 2: Convert to fraction form
   111,131.18/153,359.46 = 63,385.34/x
3. Step 3: Cross multiply
   111,131.18x = 153,359.46 × 63,385.34
4. Step 4: Simplify right side
   111,131.18x = 9,720,741,514.32
5. Step 5: Solve for x
   x = 9,720,741,514.32/111,131.18
6. Step 6: Final answer
   x = 87,470.87