Finding the Fourth Proportional to 109,439.84, 164,039.47 and 42,867.56

Step by Step Solution

1. Step 1: Write the proportion equation
   109,439.84 : 164,039.47 = 42,867.56 : x
2. Step 2: Convert to fraction form
   109,439.84/164,039.47 = 42,867.56/x
3. Step 3: Cross multiply
   109,439.84x = 164,039.47 × 42,867.56
4. Step 4: Simplify right side
   109,439.84x = 7,031,971,822.59
5. Step 5: Solve for x
   x = 7,031,971,822.59/109,439.84
6. Step 6: Final answer
   x = 64,254.22