Finding the Fourth Proportional to 42,807.38, 59,072.28 and 23,688.21

Step by Step Solution

1. Step 1: Write the proportion equation
   42,807.38 : 59,072.28 = 23,688.21 : x
2. Step 2: Convert to fraction form
   42,807.38/59,072.28 = 23,688.21/x
3. Step 3: Cross multiply
   42,807.38x = 59,072.28 × 23,688.21
4. Step 4: Simplify right side
   42,807.38x = 1,399,316,573.82
5. Step 5: Solve for x
   x = 1,399,316,573.82/42,807.38
6. Step 6: Final answer
   x = 32,688.68