Finding the Fourth Proportional to 128,061.39, 192,120.63 and 39,323.86

Step by Step Solution

1. Step 1: Write the proportion equation
   128,061.39 : 192,120.63 = 39,323.86 : x
2. Step 2: Convert to fraction form
   128,061.39/192,120.63 = 39,323.86/x
3. Step 3: Cross multiply
   128,061.39x = 192,120.63 × 39,323.86
4. Step 4: Simplify right side
   128,061.39x = 7,554,924,757.23
5. Step 5: Solve for x
   x = 7,554,924,757.23/128,061.39
6. Step 6: Final answer
   x = 58,994.56