Finding the Fourth Proportional to 109,425.29, 164,152.28 and 42,856.76

Step by Step Solution

1. Step 1: Write the proportion equation
   109,425.29 : 164,152.28 = 42,856.76 : x
2. Step 2: Convert to fraction form
   109,425.29/164,152.28 = 42,856.76/x
3. Step 3: Cross multiply
   109,425.29x = 164,152.28 × 42,856.76
4. Step 4: Simplify right side
   109,425.29x = 7,035,034,867.41
5. Step 5: Solve for x
   x = 7,035,034,867.41/109,425.29
6. Step 6: Final answer
   x = 64,290.76