Finding the Fourth Proportional to 109,423.55, 164,069.60 and 42,784.29

Step by Step Solution

1. Step 1: Write the proportion equation
   109,423.55 : 164,069.60 = 42,784.29 : x
2. Step 2: Convert to fraction form
   109,423.55/164,069.60 = 42,784.29/x
3. Step 3: Cross multiply
   109,423.55x = 164,069.60 × 42,784.29
4. Step 4: Simplify right side
   109,423.55x = 7,019,601,132.66
5. Step 5: Solve for x
   x = 7,019,601,132.66/109,423.55
6. Step 6: Final answer
   x = 64,150.74