Finding the Fourth Proportional to 128,967.39, 193,557.69 and 65,834.16

Step by Step Solution

1. Step 1: Write the proportion equation
   128,967.39 : 193,557.69 = 65,834.16 : x
2. Step 2: Convert to fraction form
   128,967.39/193,557.69 = 65,834.16/x
3. Step 3: Cross multiply
   128,967.39x = 193,557.69 × 65,834.16
4. Step 4: Simplify right side
   128,967.39x = 12,742,707,932.69
5. Step 5: Solve for x
   x = 12,742,707,932.69/128,967.39
6. Step 6: Final answer
   x = 98,805.66