Finding the Fourth Proportional to 78,703.61, 108,607.82 and 42,892.85

Step by Step Solution

1. Step 1: Write the proportion equation
   78,703.61 : 108,607.82 = 42,892.85 : x
2. Step 2: Convert to fraction form
   78,703.61/108,607.82 = 42,892.85/x
3. Step 3: Cross multiply
   78,703.61x = 108,607.82 × 42,892.85
4. Step 4: Simplify right side
   78,703.61x = 4,658,499,230.41
5. Step 5: Solve for x
   x = 4,658,499,230.41/78,703.61
6. Step 6: Final answer
   x = 59,190.41