Finding the Fourth Proportional to 42,428.78, 58,553.79 and 23,565.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,428.78 : 58,553.79 = 23,565.50 : x
2. Step 2: Convert to fraction form
   42,428.78/58,553.79 = 23,565.50/x
3. Step 3: Cross multiply
   42,428.78x = 58,553.79 × 23,565.50
4. Step 4: Simplify right side
   42,428.78x = 1,379,849,338.25
5. Step 5: Solve for x
   x = 1,379,849,338.25/42,428.78
6. Step 6: Final answer
   x = 32,521.54