Finding the Fourth Proportional to 123,922.26, 171,066.74 and 78,669.81

Step by Step Solution

1. Step 1: Write the proportion equation
   123,922.26 : 171,066.74 = 78,669.81 : x
2. Step 2: Convert to fraction form
   123,922.26/171,066.74 = 78,669.81/x
3. Step 3: Cross multiply
   123,922.26x = 171,066.74 × 78,669.81
4. Step 4: Simplify right side
   123,922.26x = 13,457,787,539.77
5. Step 5: Solve for x
   x = 13,457,787,539.77/123,922.26
6. Step 6: Final answer
   x = 108,598.63