Finding the Fourth Proportional to 78,006.51, 107,649 and 42,196.55

Step by Step Solution

1. Step 1: Write the proportion equation
   78,006.51 : 107,649 = 42,196.55 : x
2. Step 2: Convert to fraction form
   78,006.51/107,649 = 42,196.55/x
3. Step 3: Cross multiply
   78,006.51x = 107,649 × 42,196.55
4. Step 4: Simplify right side
   78,006.51x = 4,542,415,872.71
5. Step 5: Solve for x
   x = 4,542,415,872.71/78,006.51
6. Step 6: Final answer
   x = 58,231.24