Finding the Fourth Proportional to 78,085.58, 107,758.16 and 42,275.62

Step by Step Solution

1. Step 1: Write the proportion equation
   78,085.58 : 107,758.16 = 42,275.62 : x
2. Step 2: Convert to fraction form
   78,085.58/107,758.16 = 42,275.62/x
3. Step 3: Cross multiply
   78,085.58x = 107,758.16 × 42,275.62
4. Step 4: Simplify right side
   78,085.58x = 4,555,543,165.36
5. Step 5: Solve for x
   x = 4,555,543,165.36/78,085.58
6. Step 6: Final answer
   x = 58,340.39