Finding the Fourth Proportional to 78,107.98, 107,789.07 and 42,298.03

Step by Step Solution

1. Step 1: Write the proportion equation
   78,107.98 : 107,789.07 = 42,298.03 : x
2. Step 2: Convert to fraction form
   78,107.98/107,789.07 = 42,298.03/x
3. Step 3: Cross multiply
   78,107.98x = 107,789.07 × 42,298.03
4. Step 4: Simplify right side
   78,107.98x = 4,559,265,316.53
5. Step 5: Solve for x
   x = 4,559,265,316.53/78,107.98
6. Step 6: Final answer
   x = 58,371.31