Finding the Fourth Proportional to 113,724.40, 156,978.84 and 68,427.76

Step by Step Solution

1. Step 1: Write the proportion equation
   113,724.40 : 156,978.84 = 68,427.76 : x
2. Step 2: Convert to fraction form
   113,724.40/156,978.84 = 68,427.76/x
3. Step 3: Cross multiply
   113,724.40x = 156,978.84 × 68,427.76
4. Step 4: Simplify right side
   113,724.40x = 10,741,710,388.60
5. Step 5: Solve for x
   x = 10,741,710,388.60/113,724.40
6. Step 6: Final answer
   x = 94,453.88