Finding the Fourth Proportional to 81,685.52, 112,712.78 and 51,055.00

Step by Step Solution

1. Step 1: Write the proportion equation
   81,685.52 : 112,712.78 = 51,055.00 : x
2. Step 2: Convert to fraction form
   81,685.52/112,712.78 = 51,055.00/x
3. Step 3: Cross multiply
   81,685.52x = 112,712.78 × 51,055.00
4. Step 4: Simplify right side
   81,685.52x = 5,754,550,445.84
5. Step 5: Solve for x
   x = 5,754,550,445.84/81,685.52
6. Step 6: Final answer
   x = 70,447.62