Finding the Fourth Proportional to 128,151.33, 192,095.78 and 64,854.15

Step by Step Solution

1. Step 1: Write the proportion equation
   128,151.33 : 192,095.78 = 64,854.15 : x
2. Step 2: Convert to fraction form
   128,151.33/192,095.78 = 64,854.15/x
3. Step 3: Cross multiply
   128,151.33x = 192,095.78 × 64,854.15
4. Step 4: Simplify right side
   128,151.33x = 12,458,208,206.22
5. Step 5: Solve for x
   x = 12,458,208,206.22/128,151.33
6. Step 6: Final answer
   x = 97,214.82