Finding the Fourth Proportional to 106,981.32, 147,658.98 and 71,172.84

Step by Step Solution

1. Step 1: Write the proportion equation
   106,981.32 : 147,658.98 = 71,172.84 : x
2. Step 2: Convert to fraction form
   106,981.32/147,658.98 = 71,172.84/x
3. Step 3: Cross multiply
   106,981.32x = 147,658.98 × 71,172.84
4. Step 4: Simplify right side
   106,981.32x = 10,509,308,958.10
5. Step 5: Solve for x
   x = 10,509,308,958.10/106,981.32
6. Step 6: Final answer
   x = 98,234.99