Finding the Fourth Proportional to 126,856.83, 174,978.05 and 81,592.09

Step by Step Solution

1. Step 1: Write the proportion equation
   126,856.83 : 174,978.05 = 81,592.09 : x
2. Step 2: Convert to fraction form
   126,856.83/174,978.05 = 81,592.09/x
3. Step 3: Cross multiply
   126,856.83x = 174,978.05 × 81,592.09
4. Step 4: Simplify right side
   126,856.83x = 14,276,824,803.62
5. Step 5: Solve for x
   x = 14,276,824,803.62/126,856.83
6. Step 6: Final answer
   x = 112,542.82