Finding the Fourth Proportional to 42,257.58, 58,316.36 and 23,138.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,257.58 : 58,316.36 = 23,138.16 : x
2. Step 2: Convert to fraction form
   42,257.58/58,316.36 = 23,138.16/x
3. Step 3: Cross multiply
   42,257.58x = 58,316.36 × 23,138.16
4. Step 4: Simplify right side
   42,257.58x = 1,349,333,152.61
5. Step 5: Solve for x
   x = 1,349,333,152.61/42,257.58
6. Step 6: Final answer
   x = 31,931.15