Finding the Fourth Proportional to 78,046.01, 107,704.29 and 42,236.79

Step by Step Solution

1. Step 1: Write the proportion equation
   78,046.01 : 107,704.29 = 42,236.79 : x
2. Step 2: Convert to fraction form
   78,046.01/107,704.29 = 42,236.79/x
3. Step 3: Cross multiply
   78,046.01x = 107,704.29 × 42,236.79
4. Step 4: Simplify right side
   78,046.01x = 4,549,083,478.83
5. Step 5: Solve for x
   x = 4,549,083,478.83/78,046.01
6. Step 6: Final answer
   x = 58,287.20