Finding the Fourth Proportional to 105,630.38, 145,773.47 and 57,883.31

Step by Step Solution

1. Step 1: Write the proportion equation
   105,630.38 : 145,773.47 = 57,883.31 : x
2. Step 2: Convert to fraction form
   105,630.38/145,773.47 = 57,883.31/x
3. Step 3: Cross multiply
   105,630.38x = 145,773.47 × 57,883.31
4. Step 4: Simplify right side
   105,630.38x = 8,437,850,953.79
5. Step 5: Solve for x
   x = 8,437,850,953.79/105,630.38
6. Step 6: Final answer
   x = 79,880.91