Finding the Fourth Proportional to 67,462.57, 93,011.79 and 55,318.30

Step by Step Solution

1. Step 1: Write the proportion equation
   67,462.57 : 93,011.79 = 55,318.30 : x
2. Step 2: Convert to fraction form
   67,462.57/93,011.79 = 55,318.30/x
3. Step 3: Cross multiply
   67,462.57x = 93,011.79 × 55,318.30
4. Step 4: Simplify right side
   67,462.57x = 5,145,254,102.76
5. Step 5: Solve for x
   x = 5,145,254,102.76/67,462.57
6. Step 6: Final answer
   x = 76,268.28