Finding the Fourth Proportional to 376,086.32, 564,212.54 and 139,429.01

Step by Step Solution

1. Step 1: Write the proportion equation
   376,086.32 : 564,212.54 = 139,429.01 : x
2. Step 2: Convert to fraction form
   376,086.32/564,212.54 = 139,429.01/x
3. Step 3: Cross multiply
   376,086.32x = 564,212.54 × 139,429.01
4. Step 4: Simplify right side
   376,086.32x = 78,667,592,363.58
5. Step 5: Solve for x
   x = 78,667,592,363.58/376,086.32
6. Step 6: Final answer
   x = 209,174.30