Finding the Fourth Proportional to 42,460.73, 63,701.53 and 21,123.52

Step by Step Solution

1. Step 1: Write the proportion equation
   42,460.73 : 63,701.53 = 21,123.52 : x
2. Step 2: Convert to fraction form
   42,460.73/63,701.53 = 21,123.52/x
3. Step 3: Cross multiply
   42,460.73x = 63,701.53 × 21,123.52
4. Step 4: Simplify right side
   42,460.73x = 1,345,600,410.14
5. Step 5: Solve for x
   x = 1,345,600,410.14/42,460.73
6. Step 6: Final answer
   x = 31,690.47