Finding the Fourth Proportional to 105,762.78, 145,949.90 and 60,437.88

Step by Step Solution

1. Step 1: Write the proportion equation
   105,762.78 : 145,949.90 = 60,437.88 : x
2. Step 2: Convert to fraction form
   105,762.78/145,949.90 = 60,437.88/x
3. Step 3: Cross multiply
   105,762.78x = 145,949.90 × 60,437.88
4. Step 4: Simplify right side
   105,762.78x = 8,820,902,240.02
5. Step 5: Solve for x
   x = 8,820,902,240.02/105,762.78
6. Step 6: Final answer
   x = 83,402.71