Finding the Fourth Proportional to 42,155.39, 63,224.96 and 19,659.86

Step by Step Solution

1. Step 1: Write the proportion equation
   42,155.39 : 63,224.96 = 19,659.86 : x
2. Step 2: Convert to fraction form
   42,155.39/63,224.96 = 19,659.86/x
3. Step 3: Cross multiply
   42,155.39x = 63,224.96 × 19,659.86
4. Step 4: Simplify right side
   42,155.39x = 1,242,993,862.11
5. Step 5: Solve for x
   x = 1,242,993,862.11/42,155.39
6. Step 6: Final answer
   x = 29,486.00