Finding the Fourth Proportional to 93,079.83, 128,452.86 and 57,290.79

Step by Step Solution

1. Step 1: Write the proportion equation
   93,079.83 : 128,452.86 = 57,290.79 : x
2. Step 2: Convert to fraction form
   93,079.83/128,452.86 = 57,290.79/x
3. Step 3: Cross multiply
   93,079.83x = 128,452.86 × 57,290.79
4. Step 4: Simplify right side
   93,079.83x = 7,359,165,827.16
5. Step 5: Solve for x
   x = 7,359,165,827.16/93,079.83
6. Step 6: Final answer
   x = 79,062.95