Finding the Fourth Proportional to 113,521.76, 156,660.06 and 65,802.78

Step by Step Solution

1. Step 1: Write the proportion equation
   113,521.76 : 156,660.06 = 65,802.78 : x
2. Step 2: Convert to fraction form
   113,521.76/156,660.06 = 65,802.78/x
3. Step 3: Cross multiply
   113,521.76x = 156,660.06 × 65,802.78
4. Step 4: Simplify right side
   113,521.76x = 10,308,667,133.95
5. Step 5: Solve for x
   x = 10,308,667,133.95/113,521.76
6. Step 6: Final answer
   x = 90,807.86