Finding the Fourth Proportional to 42,151.41, 63,172.61 and 31,538.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,151.41 : 63,172.61 = 31,538.16 : x
2. Step 2: Convert to fraction form
   42,151.41/63,172.61 = 31,538.16/x
3. Step 3: Cross multiply
   42,151.41x = 63,172.61 × 31,538.16
4. Step 4: Simplify right side
   42,151.41x = 1,992,347,724.11
5. Step 5: Solve for x
   x = 1,992,347,724.11/42,151.41
6. Step 6: Final answer
   x = 47,266.46