Finding the Fourth Proportional to 128,965.39, 193,554.69 and 65,832.16

Step by Step Solution

1. Step 1: Write the proportion equation
   128,965.39 : 193,554.69 = 65,832.16 : x
2. Step 2: Convert to fraction form
   128,965.39/193,554.69 = 65,832.16/x
3. Step 3: Cross multiply
   128,965.39x = 193,554.69 × 65,832.16
4. Step 4: Simplify right side
   128,965.39x = 12,742,123,320.83
5. Step 5: Solve for x
   x = 12,742,123,320.83/128,965.39
6. Step 6: Final answer
   x = 98,802.66