Finding the Fourth Proportional to 65,429.10, 91,808.10 and 65,429.10

Step by Step Solution

1. Step 1: Write the proportion equation
   65,429.10 : 91,808.10 = 65,429.10 : x
2. Step 2: Convert to fraction form
   65,429.10/91,808.10 = 65,429.10/x
3. Step 3: Cross multiply
   65,429.10x = 91,808.10 × 65,429.10
4. Step 4: Simplify right side
   65,429.10x = 6,006,921,355.71
5. Step 5: Solve for x
   x = 6,006,921,355.71/65,429.10
6. Step 6: Final answer
   x = 91,808.10