Finding the Fourth Proportional to 142,485.04, 213,680.76 and 52,507

Step by Step Solution

1. Step 1: Write the proportion equation
   142,485.04 : 213,680.76 = 52,507 : x
2. Step 2: Convert to fraction form
   142,485.04/213,680.76 = 52,507/x
3. Step 3: Cross multiply
   142,485.04x = 213,680.76 × 52,507
4. Step 4: Simplify right side
   142,485.04x = 11,219,735,665.32
5. Step 5: Solve for x
   x = 11,219,735,665.32/142,485.04
6. Step 6: Final answer
   x = 78,743.25