Finding the Fourth Proportional to 55,421.48, 83,147.01 and 19,886.38

Step by Step Solution

1. Step 1: Write the proportion equation
   55,421.48 : 83,147.01 = 19,886.38 : x
2. Step 2: Convert to fraction form
   55,421.48/83,147.01 = 19,886.38/x
3. Step 3: Cross multiply
   55,421.48x = 83,147.01 × 19,886.38
4. Step 4: Simplify right side
   55,421.48x = 1,653,493,036.72
5. Step 5: Solve for x
   x = 1,653,493,036.72/55,421.48
6. Step 6: Final answer
   x = 29,834.88