Finding the Fourth Proportional to 122,499.52, 169,048.50 and 77,206.74

Step by Step Solution

1. Step 1: Write the proportion equation
   122,499.52 : 169,048.50 = 77,206.74 : x
2. Step 2: Convert to fraction form
   122,499.52/169,048.50 = 77,206.74/x
3. Step 3: Cross multiply
   122,499.52x = 169,048.50 × 77,206.74
4. Step 4: Simplify right side
   122,499.52x = 13,051,683,586.89
5. Step 5: Solve for x
   x = 13,051,683,586.89/122,499.52
6. Step 6: Final answer
   x = 106,544.77