Finding the Fourth Proportional to 81,488.62, 112,454.15 and 45,678.62

Step by Step Solution

1. Step 1: Write the proportion equation
   81,488.62 : 112,454.15 = 45,678.62 : x
2. Step 2: Convert to fraction form
   81,488.62/112,454.15 = 45,678.62/x
3. Step 3: Cross multiply
   81,488.62x = 112,454.15 × 45,678.62
4. Step 4: Simplify right side
   81,488.62x = 5,136,750,385.27
5. Step 5: Solve for x
   x = 5,136,750,385.27/81,488.62
6. Step 6: Final answer
   x = 63,036.41