Finding the Fourth Proportional to 78,499.82, 108,325.31 and 42,689.82

Step by Step Solution

1. Step 1: Write the proportion equation
   78,499.82 : 108,325.31 = 42,689.82 : x
2. Step 2: Convert to fraction form
   78,499.82/108,325.31 = 42,689.82/x
3. Step 3: Cross multiply
   78,499.82x = 108,325.31 × 42,689.82
4. Step 4: Simplify right side
   78,499.82x = 4,624,387,985.34
5. Step 5: Solve for x
   x = 4,624,387,985.34/78,499.82
6. Step 6: Final answer
   x = 58,909.54