Finding the Fourth Proportional to 122,931, 169,644.24 and 69,216.12

Step by Step Solution

1. Step 1: Write the proportion equation
   122,931 : 169,644.24 = 69,216.12 : x
2. Step 2: Convert to fraction form
   122,931/169,644.24 = 69,216.12/x
3. Step 3: Cross multiply
   122,931x = 169,644.24 × 69,216.12
4. Step 4: Simplify right side
   122,931x = 11,742,116,073.15
5. Step 5: Solve for x
   x = 11,742,116,073.15/122,931
6. Step 6: Final answer
   x = 95,517.94