Finding the Fourth Proportional to 76,317.38, 105,317.92 and 42,783.38

Step by Step Solution

1. Step 1: Write the proportion equation
   76,317.38 : 105,317.92 = 42,783.38 : x
2. Step 2: Convert to fraction form
   76,317.38/105,317.92 = 42,783.38/x
3. Step 3: Cross multiply
   76,317.38x = 105,317.92 × 42,783.38
4. Step 4: Simplify right side
   76,317.38x = 4,505,856,592.17
5. Step 5: Solve for x
   x = 4,505,856,592.17/76,317.38
6. Step 6: Final answer
   x = 59,041.03