Finding the Fourth Proportional to 215,433.51, 297,314.04 and 154,185.45

Step by Step Solution

1. Step 1: Write the proportion equation
   215,433.51 : 297,314.04 = 154,185.45 : x
2. Step 2: Convert to fraction form
   215,433.51/297,314.04 = 154,185.45/x
3. Step 3: Cross multiply
   215,433.51x = 297,314.04 × 154,185.45
4. Step 4: Simplify right side
   215,433.51x = 45,841,499,048.72
5. Step 5: Solve for x
   x = 45,841,499,048.72/215,433.51
6. Step 6: Final answer
   x = 212,787.23