Finding the Fourth Proportional to 139,123.44, 208,726.02 and 47,961.90

Step by Step Solution

1. Step 1: Write the proportion equation
   139,123.44 : 208,726.02 = 47,961.90 : x
2. Step 2: Convert to fraction form
   139,123.44/208,726.02 = 47,961.90/x
3. Step 3: Cross multiply
   139,123.44x = 208,726.02 × 47,961.90
4. Step 4: Simplify right side
   139,123.44x = 10,010,896,498.64
5. Step 5: Solve for x
   x = 10,010,896,498.64/139,123.44
6. Step 6: Final answer
   x = 71,956.94