Finding the Fourth Proportional to 105,630.89, 145,774.16 and 57,883.82

Step by Step Solution

1. Step 1: Write the proportion equation
   105,630.89 : 145,774.16 = 57,883.82 : x
2. Step 2: Convert to fraction form
   105,630.89/145,774.16 = 57,883.82/x
3. Step 3: Cross multiply
   105,630.89x = 145,774.16 × 57,883.82
4. Step 4: Simplify right side
   105,630.89x = 8,437,964,219.80
5. Step 5: Solve for x
   x = 8,437,964,219.80/105,630.89
6. Step 6: Final answer
   x = 79,881.60