Finding the Fourth Proportional to 78,046.03, 107,703.52 and 42,236.05

Step by Step Solution

1. Step 1: Write the proportion equation
   78,046.03 : 107,703.52 = 42,236.05 : x
2. Step 2: Convert to fraction form
   78,046.03/107,703.52 = 42,236.05/x
3. Step 3: Cross multiply
   78,046.03x = 107,703.52 × 42,236.05
4. Step 4: Simplify right side
   78,046.03x = 4,548,971,255.90
5. Step 5: Solve for x
   x = 4,548,971,255.90/78,046.03
6. Step 6: Final answer
   x = 58,285.75