Finding the Fourth Proportional to 76,308.14, 105,302.31 and 42,318.02

Step by Step Solution

1. Step 1: Write the proportion equation
   76,308.14 : 105,302.31 = 42,318.02 : x
2. Step 2: Convert to fraction form
   76,308.14/105,302.31 = 42,318.02/x
3. Step 3: Cross multiply
   76,308.14x = 105,302.31 × 42,318.02
4. Step 4: Simplify right side
   76,308.14x = 4,456,185,260.63
5. Step 5: Solve for x
   x = 4,456,185,260.63/76,308.14
6. Step 6: Final answer
   x = 58,397.25