Finding the Fourth Proportional to 42,308.69, 58,386.57 and 23,188.15

Step by Step Solution

1. Step 1: Write the proportion equation
   42,308.69 : 58,386.57 = 23,188.15 : x
2. Step 2: Convert to fraction form
   42,308.69/58,386.57 = 23,188.15/x
3. Step 3: Cross multiply
   42,308.69x = 58,386.57 × 23,188.15
4. Step 4: Simplify right side
   42,308.69x = 1,353,876,251.21
5. Step 5: Solve for x
   x = 1,353,876,251.21/42,308.69
6. Step 6: Final answer
   x = 31,999.96