Finding the Fourth Proportional to 78,117.57, 107,801.67 and 42,306.75

Step by Step Solution

1. Step 1: Write the proportion equation
   78,117.57 : 107,801.67 = 42,306.75 : x
2. Step 2: Convert to fraction form
   78,117.57/107,801.67 = 42,306.75/x
3. Step 3: Cross multiply
   78,117.57x = 107,801.67 × 42,306.75
4. Step 4: Simplify right side
   78,117.57x = 4,560,738,302.27
5. Step 5: Solve for x
   x = 4,560,738,302.27/78,117.57
6. Step 6: Final answer
   x = 58,383.00