Finding the Fourth Proportional to 138,846.78, 208,227.05 and 50,088.74

Step by Step Solution

1. Step 1: Write the proportion equation
   138,846.78 : 208,227.05 = 50,088.74 : x
2. Step 2: Convert to fraction form
   138,846.78/208,227.05 = 50,088.74/x
3. Step 3: Cross multiply
   138,846.78x = 208,227.05 × 50,088.74
4. Step 4: Simplify right side
   138,846.78x = 10,429,830,568.42
5. Step 5: Solve for x
   x = 10,429,830,568.42/138,846.78
6. Step 6: Final answer
   x = 75,117.55