Finding the Fourth Proportional to 62,450.78, 86,100.72 and 45,457.80

Step by Step Solution

1. Step 1: Write the proportion equation
   62,450.78 : 86,100.72 = 45,457.80 : x
2. Step 2: Convert to fraction form
   62,450.78/86,100.72 = 45,457.80/x
3. Step 3: Cross multiply
   62,450.78x = 86,100.72 × 45,457.80
4. Step 4: Simplify right side
   62,450.78x = 3,913,949,309.62
5. Step 5: Solve for x
   x = 3,913,949,309.62/62,450.78
6. Step 6: Final answer
   x = 62,672.54