Finding the Fourth Proportional to 128,957.30, 193,347.72 and 65,654.93

Step by Step Solution

1. Step 1: Write the proportion equation
   128,957.30 : 193,347.72 = 65,654.93 : x
2. Step 2: Convert to fraction form
   128,957.30/193,347.72 = 65,654.93/x
3. Step 3: Cross multiply
   128,957.30x = 193,347.72 × 65,654.93
4. Step 4: Simplify right side
   128,957.30x = 12,694,231,751.83
5. Step 5: Solve for x
   x = 12,694,231,751.83/128,957.30
6. Step 6: Final answer
   x = 98,437.48