Finding the Fourth Proportional to 78,530.34, 117,826.98 and 28,613.97

Step by Step Solution

1. Step 1: Write the proportion equation
   78,530.34 : 117,826.98 = 28,613.97 : x
2. Step 2: Convert to fraction form
   78,530.34/117,826.98 = 28,613.97/x
3. Step 3: Cross multiply
   78,530.34x = 117,826.98 × 28,613.97
4. Step 4: Simplify right side
   78,530.34x = 3,371,497,670.91
5. Step 5: Solve for x
   x = 3,371,497,670.91/78,530.34
6. Step 6: Final answer
   x = 42,932.42