Finding the Fourth Proportional to 107,386.47, 148,196.72 and 64,351.78

Step by Step Solution

1. Step 1: Write the proportion equation
   107,386.47 : 148,196.72 = 64,351.78 : x
2. Step 2: Convert to fraction form
   107,386.47/148,196.72 = 64,351.78/x
3. Step 3: Cross multiply
   107,386.47x = 148,196.72 × 64,351.78
4. Step 4: Simplify right side
   107,386.47x = 9,536,722,722.16
5. Step 5: Solve for x
   x = 9,536,722,722.16/107,386.47
6. Step 6: Final answer
   x = 88,807.49