Finding the Fourth Proportional to 78,108.93, 107,790.15 and 42,298.83

Step by Step Solution

1. Step 1: Write the proportion equation
   78,108.93 : 107,790.15 = 42,298.83 : x
2. Step 2: Convert to fraction form
   78,108.93/107,790.15 = 42,298.83/x
3. Step 3: Cross multiply
   78,108.93x = 107,790.15 × 42,298.83
4. Step 4: Simplify right side
   78,108.93x = 4,559,396,984.93
5. Step 5: Solve for x
   x = 4,559,396,984.93/78,108.93
6. Step 6: Final answer
   x = 58,372.29