Finding the Fourth Proportional to 78,046.16, 107,703.69 and 42,236.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,046.16 : 107,703.69 = 42,236.18 : x
2. Step 2: Convert to fraction form
   78,046.16/107,703.69 = 42,236.18/x
3. Step 3: Cross multiply
   78,046.16x = 107,703.69 × 42,236.18
4. Step 4: Simplify right side
   78,046.16x = 4,548,991,898.99
5. Step 5: Solve for x
   x = 4,548,991,898.99/78,046.16
6. Step 6: Final answer
   x = 58,285.92