Finding the Fourth Proportional to 42,123.30, 63,153.76 and 19,910.73

Step by Step Solution

1. Step 1: Write the proportion equation
   42,123.30 : 63,153.76 = 19,910.73 : x
2. Step 2: Convert to fraction form
   42,123.30/63,153.76 = 19,910.73/x
3. Step 3: Cross multiply
   42,123.30x = 63,153.76 × 19,910.73
4. Step 4: Simplify right side
   42,123.30x = 1,257,437,463.84
5. Step 5: Solve for x
   x = 1,257,437,463.84/42,123.30
6. Step 6: Final answer
   x = 29,851.35