Finding the Fourth Proportional to 68,120.64, 93,978.72 and 46,872

Step by Step Solution

1. Step 1: Write the proportion equation
   68,120.64 : 93,978.72 = 46,872 : x
2. Step 2: Convert to fraction form
   68,120.64/93,978.72 = 46,872/x
3. Step 3: Cross multiply
   68,120.64x = 93,978.72 × 46,872
4. Step 4: Simplify right side
   68,120.64x = 4,404,970,563.84
5. Step 5: Solve for x
   x = 4,404,970,563.84/68,120.64
6. Step 6: Final answer
   x = 64,664.26