Finding the Fourth Proportional to 215,478.08, 297,368.52 and 119,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   215,478.08 : 297,368.52 = 119,978.72 : x
2. Step 2: Convert to fraction form
   215,478.08/297,368.52 = 119,978.72/x
3. Step 3: Cross multiply
   215,478.08x = 297,368.52 × 119,978.72
4. Step 4: Simplify right side
   215,478.08x = 35,677,894,397.89
5. Step 5: Solve for x
   x = 35,677,894,397.89/215,478.08
6. Step 6: Final answer
   x = 165,575.52