Finding the Fourth Proportional to 49,117, 67,779.12 and 28,974.64

Step by Step Solution

1. Step 1: Write the proportion equation
   49,117 : 67,779.12 = 28,974.64 : x
2. Step 2: Convert to fraction form
   49,117/67,779.12 = 28,974.64/x
3. Step 3: Cross multiply
   49,117x = 67,779.12 × 28,974.64
4. Step 4: Simplify right side
   49,117x = 1,963,875,601.52
5. Step 5: Solve for x
   x = 1,963,875,601.52/49,117
6. Step 6: Final answer
   x = 39,983.62