Finding the Fourth Proportional to 65,307.15, 90,049.59 and 53,333.19

Step by Step Solution

1. Step 1: Write the proportion equation
   65,307.15 : 90,049.59 = 53,333.19 : x
2. Step 2: Convert to fraction form
   65,307.15/90,049.59 = 53,333.19/x
3. Step 3: Cross multiply
   65,307.15x = 90,049.59 × 53,333.19
4. Step 4: Simplify right side
   65,307.15x = 4,802,631,892.89
5. Step 5: Solve for x
   x = 4,802,631,892.89/65,307.15
6. Step 6: Final answer
   x = 73,539.14