Finding the Fourth Proportional to 78,114.57, 107,797.50 and 42,303.75

Step by Step Solution

1. Step 1: Write the proportion equation
   78,114.57 : 107,797.50 = 42,303.75 : x
2. Step 2: Convert to fraction form
   78,114.57/107,797.50 = 42,303.75/x
3. Step 3: Cross multiply
   78,114.57x = 107,797.50 × 42,303.75
4. Step 4: Simplify right side
   78,114.57x = 4,560,238,490.63
5. Step 5: Solve for x
   x = 4,560,238,490.63/78,114.57
6. Step 6: Final answer
   x = 58,378.85