Finding the Fourth Proportional to 78,296.16, 108,048.98 and 42,486.17

Step by Step Solution

1. Step 1: Write the proportion equation
   78,296.16 : 108,048.98 = 42,486.17 : x
2. Step 2: Convert to fraction form
   78,296.16/108,048.98 = 42,486.17/x
3. Step 3: Cross multiply
   78,296.16x = 108,048.98 × 42,486.17
4. Step 4: Simplify right side
   78,296.16x = 4,590,587,566.10
5. Step 5: Solve for x
   x = 4,590,587,566.10/78,296.16
6. Step 6: Final answer
   x = 58,631.07