Finding the Fourth Proportional to 122,978.39, 169,710.75 and 69,264.32

Step by Step Solution

1. Step 1: Write the proportion equation
   122,978.39 : 169,710.75 = 69,264.32 : x
2. Step 2: Convert to fraction form
   122,978.39/169,710.75 = 69,264.32/x
3. Step 3: Cross multiply
   122,978.39x = 169,710.75 × 69,264.32
4. Step 4: Simplify right side
   122,978.39x = 11,754,898,846.89
5. Step 5: Solve for x
   x = 11,754,898,846.89/122,978.39
6. Step 6: Final answer
   x = 95,585.08