Finding the Fourth Proportional to 66,072.56, 99,144.12 and 31,012.52

Step by Step Solution

1. Step 1: Write the proportion equation
   66,072.56 : 99,144.12 = 31,012.52 : x
2. Step 2: Convert to fraction form
   66,072.56/99,144.12 = 31,012.52/x
3. Step 3: Cross multiply
   66,072.56x = 99,144.12 × 31,012.52
4. Step 4: Simplify right side
   66,072.56x = 3,074,709,004.38
5. Step 5: Solve for x
   x = 3,074,709,004.38/66,072.56
6. Step 6: Final answer
   x = 46,535.34