Finding the Fourth Proportional to 376,081.83, 518,983.57 and 210,507.47

Step by Step Solution

1. Step 1: Write the proportion equation
   376,081.83 : 518,983.57 = 210,507.47 : x
2. Step 2: Convert to fraction form
   376,081.83/518,983.57 = 210,507.47/x
3. Step 3: Cross multiply
   376,081.83x = 518,983.57 × 210,507.47
4. Step 4: Simplify right side
   376,081.83x = 109,249,919,852.86
5. Step 5: Solve for x
   x = 109,249,919,852.86/376,081.83
6. Step 6: Final answer
   x = 290,495.08