Finding the Fourth Proportional to 139,246.16, 208,869.10 and 49,354.72

Step by Step Solution

1. Step 1: Write the proportion equation
   139,246.16 : 208,869.10 = 49,354.72 : x
2. Step 2: Convert to fraction form
   139,246.16/208,869.10 = 49,354.72/x
3. Step 3: Cross multiply
   139,246.16x = 208,869.10 × 49,354.72
4. Step 4: Simplify right side
   139,246.16x = 10,308,675,301.59
5. Step 5: Solve for x
   x = 10,308,675,301.59/139,246.16
6. Step 6: Final answer
   x = 74,032.03