Finding the Fourth Proportional to 64,531.08, 89,003.61 and 46,685.16

Step by Step Solution

1. Step 1: Write the proportion equation
   64,531.08 : 89,003.61 = 46,685.16 : x
2. Step 2: Convert to fraction form
   64,531.08/89,003.61 = 46,685.16/x
3. Step 3: Cross multiply
   64,531.08x = 89,003.61 × 46,685.16
4. Step 4: Simplify right side
   64,531.08x = 4,155,147,773.43
5. Step 5: Solve for x
   x = 4,155,147,773.43/64,531.08
6. Step 6: Final answer
   x = 64,389.87