Finding the Fourth Proportional to 297,978.98, 447,030.06 and 98,311.58

Step by Step Solution

1. Step 1: Write the proportion equation
   297,978.98 : 447,030.06 = 98,311.58 : x
2. Step 2: Convert to fraction form
   297,978.98/447,030.06 = 98,311.58/x
3. Step 3: Cross multiply
   297,978.98x = 447,030.06 × 98,311.58
4. Step 4: Simplify right side
   297,978.98x = 43,948,231,506.09
5. Step 5: Solve for x
   x = 43,948,231,506.09/297,978.98
6. Step 6: Final answer
   x = 147,487.69