Finding the Fourth Proportional to 45,072.18, 62,212.59 and 31,646.70

Step by Step Solution

1. Step 1: Write the proportion equation
   45,072.18 : 62,212.59 = 31,646.70 : x
2. Step 2: Convert to fraction form
   45,072.18/62,212.59 = 31,646.70/x
3. Step 3: Cross multiply
   45,072.18x = 62,212.59 × 31,646.70
4. Step 4: Simplify right side
   45,072.18x = 1,968,823,171.95
5. Step 5: Solve for x
   x = 1,968,823,171.95/45,072.18
6. Step 6: Final answer
   x = 43,681.56