Finding the Fourth Proportional to 78,233.85, 107,962.67 and 42,423.75

Step by Step Solution

1. Step 1: Write the proportion equation
   78,233.85 : 107,962.67 = 42,423.75 : x
2. Step 2: Convert to fraction form
   78,233.85/107,962.67 = 42,423.75/x
3. Step 3: Cross multiply
   78,233.85x = 107,962.67 × 42,423.75
4. Step 4: Simplify right side
   78,233.85x = 4,580,181,427.47
5. Step 5: Solve for x
   x = 4,580,181,427.47/78,233.85
6. Step 6: Final answer
   x = 58,544.75