Finding the Fourth Proportional to 78,669.93, 108,564.17 and 42,859.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78,669.93 : 108,564.17 = 42,859.83 : x
2. Step 2: Convert to fraction form
   78,669.93/108,564.17 = 42,859.83/x
3. Step 3: Cross multiply
   78,669.93x = 108,564.17 × 42,859.83
4. Step 4: Simplify right side
   78,669.93x = 4,653,041,870.29
5. Step 5: Solve for x
   x = 4,653,041,870.29/78,669.93
6. Step 6: Final answer
   x = 59,146.38