Finding the Fourth Proportional to 128,123.10, 192,184.64 and 64,933.38

Step by Step Solution

1. Step 1: Write the proportion equation
   128,123.10 : 192,184.64 = 64,933.38 : x
2. Step 2: Convert to fraction form
   128,123.10/192,184.64 = 64,933.38/x
3. Step 3: Cross multiply
   128,123.10x = 192,184.64 × 64,933.38
4. Step 4: Simplify right side
   128,123.10x = 12,479,198,259.28
5. Step 5: Solve for x
   x = 12,479,198,259.28/128,123.10
6. Step 6: Final answer
   x = 97,400.06