Finding the Fourth Proportional to 75,300.30, 112,728.51 and 65,958.57

Step by Step Solution

1. Step 1: Write the proportion equation
   75,300.30 : 112,728.51 = 65,958.57 : x
2. Step 2: Convert to fraction form
   75,300.30/112,728.51 = 65,958.57/x
3. Step 3: Cross multiply
   75,300.30x = 112,728.51 × 65,958.57
4. Step 4: Simplify right side
   75,300.30x = 7,435,411,317.83
5. Step 5: Solve for x
   x = 7,435,411,317.83/75,300.30
6. Step 6: Final answer
   x = 98,743.45