Finding the Fourth Proportional to 55,156.23, 82,661.64 and 21,858.15

Step by Step Solution

1. Step 1: Write the proportion equation
   55,156.23 : 82,661.64 = 21,858.15 : x
2. Step 2: Convert to fraction form
   55,156.23/82,661.64 = 21,858.15/x
3. Step 3: Cross multiply
   55,156.23x = 82,661.64 × 21,858.15
4. Step 4: Simplify right side
   55,156.23x = 1,806,830,526.37
5. Step 5: Solve for x
   x = 1,806,830,526.37/55,156.23
6. Step 6: Final answer
   x = 32,758.41