Finding the Fourth Proportional to 65,218.94, 89,980.56 and 45,068.57

Step by Step Solution

1. Step 1: Write the proportion equation
   65,218.94 : 89,980.56 = 45,068.57 : x
2. Step 2: Convert to fraction form
   65,218.94/89,980.56 = 45,068.57/x
3. Step 3: Cross multiply
   65,218.94x = 89,980.56 × 45,068.57
4. Step 4: Simplify right side
   65,218.94x = 4,055,294,717.10
5. Step 5: Solve for x
   x = 4,055,294,717.10/65,218.94
6. Step 6: Final answer
   x = 62,179.71