Finding the Fourth Proportional to 55,436.90, 83,139.15 and 19,894.10

Step by Step Solution

1. Step 1: Write the proportion equation
   55,436.90 : 83,139.15 = 19,894.10 : x
2. Step 2: Convert to fraction form
   55,436.90/83,139.15 = 19,894.10/x
3. Step 3: Cross multiply
   55,436.90x = 83,139.15 × 19,894.10
4. Step 4: Simplify right side
   55,436.90x = 1,653,978,564.02
5. Step 5: Solve for x
   x = 1,653,978,564.02/55,436.90
6. Step 6: Final answer
   x = 29,835.34