Finding the Fourth Proportional to 105,573.42, 145,693.70 and 60,250.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,573.42 : 145,693.70 = 60,250.50 : x
2. Step 2: Convert to fraction form
   105,573.42/145,693.70 = 60,250.50/x
3. Step 3: Cross multiply
   105,573.42x = 145,693.70 × 60,250.50
4. Step 4: Simplify right side
   105,573.42x = 8,778,117,970.60
5. Step 5: Solve for x
   x = 8,778,117,970.60/105,573.42
6. Step 6: Final answer
   x = 83,147.05