Finding the Fourth Proportional to 65,528.84, 90,338.18 and 55,416.62

Step by Step Solution

1. Step 1: Write the proportion equation
   65,528.84 : 90,338.18 = 55,416.62 : x
2. Step 2: Convert to fraction form
   65,528.84/90,338.18 = 55,416.62/x
3. Step 3: Cross multiply
   65,528.84x = 90,338.18 × 55,416.62
4. Step 4: Simplify right side
   65,528.84x = 5,006,236,592.55
5. Step 5: Solve for x
   x = 5,006,236,592.55/65,528.84
6. Step 6: Final answer
   x = 76,397.45