Finding the Fourth Proportional to 109,155.30, 163,740.51 and 42,573.30

Step by Step Solution

1. Step 1: Write the proportion equation
   109,155.30 : 163,740.51 = 42,573.30 : x
2. Step 2: Convert to fraction form
   109,155.30/163,740.51 = 42,573.30/x
3. Step 3: Cross multiply
   109,155.30x = 163,740.51 × 42,573.30
4. Step 4: Simplify right side
   109,155.30x = 6,970,973,854.38
5. Step 5: Solve for x
   x = 6,970,973,854.38/109,155.30
6. Step 6: Final answer
   x = 63,862.90