Finding the Fourth Proportional to 65,513.34, 90,316.80 and 55,401.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,513.34 : 90,316.80 = 55,401.12 : x
2. Step 2: Convert to fraction form
   65,513.34/90,316.80 = 55,401.12/x
3. Step 3: Cross multiply
   65,513.34x = 90,316.80 × 55,401.12
4. Step 4: Simplify right side
   65,513.34x = 5,003,651,874.82
5. Step 5: Solve for x
   x = 5,003,651,874.82/65,513.34
6. Step 6: Final answer
   x = 76,376.08