Finding the Fourth Proportional to 139,951.08, 209,780.82 and 61,044.12

Step by Step Solution

1. Step 1: Write the proportion equation
   139,951.08 : 209,780.82 = 61,044.12 : x
2. Step 2: Convert to fraction form
   139,951.08/209,780.82 = 61,044.12/x
3. Step 3: Cross multiply
   139,951.08x = 209,780.82 × 61,044.12
4. Step 4: Simplify right side
   139,951.08x = 12,805,885,549.78
5. Step 5: Solve for x
   x = 12,805,885,549.78/139,951.08
6. Step 6: Final answer
   x = 91,502.58