Finding the Fourth Proportional to 55,196.91, 82,820.79 and 42,698.16

Step by Step Solution

1. Step 1: Write the proportion equation
   55,196.91 : 82,820.79 = 42,698.16 : x
2. Step 2: Convert to fraction form
   55,196.91/82,820.79 = 42,698.16/x
3. Step 3: Cross multiply
   55,196.91x = 82,820.79 × 42,698.16
4. Step 4: Simplify right side
   55,196.91x = 3,536,295,342.75
5. Step 5: Solve for x
   x = 3,536,295,342.75/55,196.91
6. Step 6: Final answer
   x = 64,066.91