Finding the Fourth Proportional to 78,118.12, 107,802.84 and 42,308.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,118.12 : 107,802.84 = 42,308.02 : x
2. Step 2: Convert to fraction form
   78,118.12/107,802.84 = 42,308.02/x
3. Step 3: Cross multiply
   78,118.12x = 107,802.84 × 42,308.02
4. Step 4: Simplify right side
   78,118.12x = 4,560,924,710.78
5. Step 5: Solve for x
   x = 4,560,924,710.78/78,118.12
6. Step 6: Final answer
   x = 58,384.98