Finding the Fourth Proportional to 81,843.96, 112,455.15 and 65,047.80

Step by Step Solution

1. Step 1: Write the proportion equation
   81,843.96 : 112,455.15 = 65,047.80 : x
2. Step 2: Convert to fraction form
   81,843.96/112,455.15 = 65,047.80/x
3. Step 3: Cross multiply
   81,843.96x = 112,455.15 × 65,047.80
4. Step 4: Simplify right side
   81,843.96x = 7,314,960,106.17
5. Step 5: Solve for x
   x = 7,314,960,106.17/81,843.96
6. Step 6: Final answer
   x = 89,376.91