Finding the Fourth Proportional to 138,949.32, 208,434.06 and 48,981

Step by Step Solution

1. Step 1: Write the proportion equation
   138,949.32 : 208,434.06 = 48,981 : x
2. Step 2: Convert to fraction form
   138,949.32/208,434.06 = 48,981/x
3. Step 3: Cross multiply
   138,949.32x = 208,434.06 × 48,981
4. Step 4: Simplify right side
   138,949.32x = 10,209,308,692.86
5. Step 5: Solve for x
   x = 10,209,308,692.86/138,949.32
6. Step 6: Final answer
   x = 73,475.05