Finding the Fourth Proportional to 78,118.67, 107,803.73 and 42,308.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,118.67 : 107,803.73 = 42,308.68 : x
2. Step 2: Convert to fraction form
   78,118.67/107,803.73 = 42,308.68/x
3. Step 3: Cross multiply
   78,118.67x = 107,803.73 × 42,308.68
4. Step 4: Simplify right side
   78,118.67x = 4,561,033,515.38
5. Step 5: Solve for x
   x = 4,561,033,515.38/78,118.67
6. Step 6: Final answer
   x = 58,385.96