Finding the Fourth Proportional to 78,145.25, 107,840.49 and 42,335.51

Step by Step Solution

1. Step 1: Write the proportion equation
   78,145.25 : 107,840.49 = 42,335.51 : x
2. Step 2: Convert to fraction form
   78,145.25/107,840.49 = 42,335.51/x
3. Step 3: Cross multiply
   78,145.25x = 107,840.49 × 42,335.51
4. Step 4: Simplify right side
   78,145.25x = 4,565,482,142.80
5. Step 5: Solve for x
   x = 4,565,482,142.80/78,145.25
6. Step 6: Final answer
   x = 58,423.03