Finding the Fourth Proportional to 376,838.52, 520,061.42 and 215,745.72

Step by Step Solution

1. Step 1: Write the proportion equation
   376,838.52 : 520,061.42 = 215,745.72 : x
2. Step 2: Convert to fraction form
   376,838.52/520,061.42 = 215,745.72/x
3. Step 3: Cross multiply
   376,838.52x = 520,061.42 × 215,745.72
4. Step 4: Simplify right side
   376,838.52x = 112,201,025,502.12
5. Step 5: Solve for x
   x = 112,201,025,502.12/376,838.52
6. Step 6: Final answer
   x = 297,742.98