Finding the Fourth Proportional to 142,499.40, 213,698.70 and 48,983.40

Step by Step Solution

1. Step 1: Write the proportion equation
   142,499.40 : 213,698.70 = 48,983.40 : x
2. Step 2: Convert to fraction form
   142,499.40/213,698.70 = 48,983.40/x
3. Step 3: Cross multiply
   142,499.40x = 213,698.70 × 48,983.40
4. Step 4: Simplify right side
   142,499.40x = 10,467,688,901.58
5. Step 5: Solve for x
   x = 10,467,688,901.58/142,499.40
6. Step 6: Final answer
   x = 73,457.78