Finding the Fourth Proportional to 256,495.47, 384,784.56 and 79,002.42

Step by Step Solution

1. Step 1: Write the proportion equation
   256,495.47 : 384,784.56 = 79,002.42 : x
2. Step 2: Convert to fraction form
   256,495.47/384,784.56 = 79,002.42/x
3. Step 3: Cross multiply
   256,495.47x = 384,784.56 × 79,002.42
4. Step 4: Simplify right side
   256,495.47x = 30,398,911,418.64
5. Step 5: Solve for x
   x = 30,398,911,418.64/256,495.47
6. Step 6: Final answer
   x = 118,516.37