Finding the Fourth Proportional to 376,160.03, 519,100.83 and 215,018.55

Step by Step Solution

1. Step 1: Write the proportion equation
   376,160.03 : 519,100.83 = 215,018.55 : x
2. Step 2: Convert to fraction form
   376,160.03/519,100.83 = 215,018.55/x
3. Step 3: Cross multiply
   376,160.03x = 519,100.83 × 215,018.55
4. Step 4: Simplify right side
   376,160.03x = 111,616,307,770.40
5. Step 5: Solve for x
   x = 111,616,307,770.40/376,160.03
6. Step 6: Final answer
   x = 296,725.60