Finding the Fourth Proportional to 113,724.66, 156,941.07 and 65,978.82

Step by Step Solution

1. Step 1: Write the proportion equation
   113,724.66 : 156,941.07 = 65,978.82 : x
2. Step 2: Convert to fraction form
   113,724.66/156,941.07 = 65,978.82/x
3. Step 3: Cross multiply
   113,724.66x = 156,941.07 × 65,978.82
4. Step 4: Simplify right side
   113,724.66x = 10,354,786,608.14
5. Step 5: Solve for x
   x = 10,354,786,608.14/113,724.66
6. Step 6: Final answer
   x = 91,051.37