Finding the Fourth Proportional to 561,870.82, 842,630.55 and 187,806.34

Step by Step Solution

1. Step 1: Write the proportion equation
   561,870.82 : 842,630.55 = 187,806.34 : x
2. Step 2: Convert to fraction form
   561,870.82/842,630.55 = 187,806.34/x
3. Step 3: Cross multiply
   561,870.82x = 842,630.55 × 187,806.34
4. Step 4: Simplify right side
   561,870.82x = 158,251,359,567.69
5. Step 5: Solve for x
   x = 158,251,359,567.69/561,870.82
6. Step 6: Final answer
   x = 281,650.79