Finding the Fourth Proportional to 55,436.87, 83,117.35 and 19,897.40

Step by Step Solution

1. Step 1: Write the proportion equation
   55,436.87 : 83,117.35 = 19,897.40 : x
2. Step 2: Convert to fraction form
   55,436.87/83,117.35 = 19,897.40/x
3. Step 3: Cross multiply
   55,436.87x = 83,117.35 × 19,897.40
4. Step 4: Simplify right side
   55,436.87x = 1,653,819,159.89
5. Step 5: Solve for x
   x = 1,653,819,159.89/55,436.87
6. Step 6: Final answer
   x = 29,832.48