Finding the Fourth Proportional to 78,144.75, 107,839.80 and 42,335.01

Step by Step Solution

1. Step 1: Write the proportion equation
   78,144.75 : 107,839.80 = 42,335.01 : x
2. Step 2: Convert to fraction form
   78,144.75/107,839.80 = 42,335.01/x
3. Step 3: Cross multiply
   78,144.75x = 107,839.80 × 42,335.01
4. Step 4: Simplify right side
   78,144.75x = 4,565,399,011.40
5. Step 5: Solve for x
   x = 4,565,399,011.40/78,144.75
6. Step 6: Final answer
   x = 58,422.34