Finding the Fourth Proportional to 55,406.34, 83,088.54 and 19,858.05

Step by Step Solution

1. Step 1: Write the proportion equation
   55,406.34 : 83,088.54 = 19,858.05 : x
2. Step 2: Convert to fraction form
   55,406.34/83,088.54 = 19,858.05/x
3. Step 3: Cross multiply
   55,406.34x = 83,088.54 × 19,858.05
4. Step 4: Simplify right side
   55,406.34x = 1,649,976,381.75
5. Step 5: Solve for x
   x = 1,649,976,381.75/55,406.34
6. Step 6: Final answer
   x = 29,779.56