Finding the Fourth Proportional to 78,326.46, 108,087.62 and 42,515.69

Step by Step Solution

1. Step 1: Write the proportion equation
   78,326.46 : 108,087.62 = 42,515.69 : x
2. Step 2: Convert to fraction form
   78,326.46/108,087.62 = 42,515.69/x
3. Step 3: Cross multiply
   78,326.46x = 108,087.62 × 42,515.69
4. Step 4: Simplify right side
   78,326.46x = 4,595,418,991.74
5. Step 5: Solve for x
   x = 4,595,418,991.74/78,326.46
6. Step 6: Final answer
   x = 58,670.07