Finding the Fourth Proportional to 109,439.16, 164,061.30 and 42,926.76

Step by Step Solution

1. Step 1: Write the proportion equation
   109,439.16 : 164,061.30 = 42,926.76 : x
2. Step 2: Convert to fraction form
   109,439.16/164,061.30 = 42,926.76/x
3. Step 3: Cross multiply
   109,439.16x = 164,061.30 × 42,926.76
4. Step 4: Simplify right side
   109,439.16x = 7,042,620,050.39
5. Step 5: Solve for x
   x = 7,042,620,050.39/109,439.16
6. Step 6: Final answer
   x = 64,351.92