Finding the Fourth Proportional to 78,208.05, 107,927.67 and 42,398.63

Step by Step Solution

1. Step 1: Write the proportion equation
   78,208.05 : 107,927.67 = 42,398.63 : x
2. Step 2: Convert to fraction form
   78,208.05/107,927.67 = 42,398.63/x
3. Step 3: Cross multiply
   78,208.05x = 107,927.67 × 42,398.63
4. Step 4: Simplify right side
   78,208.05x = 4,575,984,807.45
5. Step 5: Solve for x
   x = 4,575,984,807.45/78,208.05
6. Step 6: Final answer
   x = 58,510.41