Finding the Fourth Proportional to 76,300.49, 105,294.15 and 42,308.96

Step by Step Solution

1. Step 1: Write the proportion equation
   76,300.49 : 105,294.15 = 42,308.96 : x
2. Step 2: Convert to fraction form
   76,300.49/105,294.15 = 42,308.96/x
3. Step 3: Cross multiply
   76,300.49x = 105,294.15 × 42,308.96
4. Step 4: Simplify right side
   76,300.49x = 4,454,885,454.11
5. Step 5: Solve for x
   x = 4,454,885,454.11/76,300.49
6. Step 6: Final answer
   x = 58,386.07