Finding the Fourth Proportional to 65,897.01, 90,499.21 and 55,268.19

Step by Step Solution

1. Step 1: Write the proportion equation
   65,897.01 : 90,499.21 = 55,268.19 : x
2. Step 2: Convert to fraction form
   65,897.01/90,499.21 = 55,268.19/x
3. Step 3: Cross multiply
   65,897.01x = 90,499.21 × 55,268.19
4. Step 4: Simplify right side
   65,897.01x = 5,001,727,394.96
5. Step 5: Solve for x
   x = 5,001,727,394.96/65,897.01
6. Step 6: Final answer
   x = 75,902.19