Finding the Fourth Proportional to 142,607, 196,849.50 and 82,991

Step by Step Solution

1. Step 1: Write the proportion equation
   142,607 : 196,849.50 = 82,991 : x
2. Step 2: Convert to fraction form
   142,607/196,849.50 = 82,991/x
3. Step 3: Cross multiply
   142,607x = 196,849.50 × 82,991
4. Step 4: Simplify right side
   142,607x = 16,336,736,854.50
5. Step 5: Solve for x
   x = 16,336,736,854.50/142,607
6. Step 6: Final answer
   x = 114,557.75