Finding the Fourth Proportional to 89,346.30, 123,120.18 and 63,780.54

Step by Step Solution

1. Step 1: Write the proportion equation
   89,346.30 : 123,120.18 = 63,780.54 : x
2. Step 2: Convert to fraction form
   89,346.30/123,120.18 = 63,780.54/x
3. Step 3: Cross multiply
   89,346.30x = 123,120.18 × 63,780.54
4. Step 4: Simplify right side
   89,346.30x = 7,852,671,565.30
5. Step 5: Solve for x
   x = 7,852,671,565.30/89,346.30
6. Step 6: Final answer
   x = 87,890.28