Finding the Fourth Proportional to 81,796.30, 112,830.78 and 51,528.22

Step by Step Solution

1. Step 1: Write the proportion equation
   81,796.30 : 112,830.78 = 51,528.22 : x
2. Step 2: Convert to fraction form
   81,796.30/112,830.78 = 51,528.22/x
3. Step 3: Cross multiply
   81,796.30x = 112,830.78 × 51,528.22
4. Step 4: Simplify right side
   81,796.30x = 5,813,969,254.61
5. Step 5: Solve for x
   x = 5,813,969,254.61/81,796.30
6. Step 6: Final answer
   x = 71,078.63