Finding the Fourth Proportional to 78,307.98, 108,065.81 and 42,498.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,307.98 : 108,065.81 = 42,498.30 : x
2. Step 2: Convert to fraction form
   78,307.98/108,065.81 = 42,498.30/x
3. Step 3: Cross multiply
   78,307.98x = 108,065.81 × 42,498.30
4. Step 4: Simplify right side
   78,307.98x = 4,592,613,000.63
5. Step 5: Solve for x
   x = 4,592,613,000.63/78,307.98
6. Step 6: Final answer
   x = 58,648.08