Finding the Fourth Proportional to 63,699.30, 87,917.22 and 42,189.30

Step by Step Solution

1. Step 1: Write the proportion equation
   63,699.30 : 87,917.22 = 42,189.30 : x
2. Step 2: Convert to fraction form
   63,699.30/87,917.22 = 42,189.30/x
3. Step 3: Cross multiply
   63,699.30x = 87,917.22 × 42,189.30
4. Step 4: Simplify right side
   63,699.30x = 3,709,165,969.75
5. Step 5: Solve for x
   x = 3,709,165,969.75/63,699.30
6. Step 6: Final answer
   x = 58,229.31