Finding the Fourth Proportional to 78,315.99, 108,076.17 and 42,506.00

Step by Step Solution

1. Step 1: Write the proportion equation
   78,315.99 : 108,076.17 = 42,506.00 : x
2. Step 2: Convert to fraction form
   78,315.99/108,076.17 = 42,506.00/x
3. Step 3: Cross multiply
   78,315.99x = 108,076.17 × 42,506.00
4. Step 4: Simplify right side
   78,315.99x = 4,593,885,141.64
5. Step 5: Solve for x
   x = 4,593,885,141.64/78,315.99
6. Step 6: Final answer
   x = 58,658.33