Finding the Fourth Proportional to 142,987.68, 214,520.40 and 49,500.72

Step by Step Solution

1. Step 1: Write the proportion equation
   142,987.68 : 214,520.40 = 49,500.72 : x
2. Step 2: Convert to fraction form
   142,987.68/214,520.40 = 49,500.72/x
3. Step 3: Cross multiply
   142,987.68x = 214,520.40 × 49,500.72
4. Step 4: Simplify right side
   142,987.68x = 10,618,914,254.69
5. Step 5: Solve for x
   x = 10,618,914,254.69/142,987.68
6. Step 6: Final answer
   x = 74,264.54