Finding the Fourth Proportional to 76,347.39, 105,359.42 and 42,813.39

Step by Step Solution

1. Step 1: Write the proportion equation
   76,347.39 : 105,359.42 = 42,813.39 : x
2. Step 2: Convert to fraction form
   76,347.39/105,359.42 = 42,813.39/x
3. Step 3: Cross multiply
   76,347.39x = 105,359.42 × 42,813.39
4. Step 4: Simplify right side
   76,347.39x = 4,510,794,045.67
5. Step 5: Solve for x
   x = 4,510,794,045.67/76,347.39
6. Step 6: Final answer
   x = 59,082.49