Finding the Fourth Proportional to 377,962.72, 521,567.34 and 216,802.69

Step by Step Solution

1. Step 1: Write the proportion equation
   377,962.72 : 521,567.34 = 216,802.69 : x
2. Step 2: Convert to fraction form
   377,962.72/521,567.34 = 216,802.69/x
3. Step 3: Cross multiply
   377,962.72x = 521,567.34 × 216,802.69
4. Step 4: Simplify right side
   377,962.72x = 113,077,200,211.22
5. Step 5: Solve for x
   x = 113,077,200,211.22/377,962.72
6. Step 6: Final answer
   x = 299,175.54