Finding the Fourth Proportional to 107,411.16, 148,203.54 and 64,968.78

Step by Step Solution

1. Step 1: Write the proportion equation
   107,411.16 : 148,203.54 = 64,968.78 : x
2. Step 2: Convert to fraction form
   107,411.16/148,203.54 = 64,968.78/x
3. Step 3: Cross multiply
   107,411.16x = 148,203.54 × 64,968.78
4. Step 4: Simplify right side
   107,411.16x = 9,628,603,185.48
5. Step 5: Solve for x
   x = 9,628,603,185.48/107,411.16
6. Step 6: Final answer
   x = 89,642.48