Finding the Fourth Proportional to 64,870.10, 97,378.05 and 50,144.30

Step by Step Solution

1. Step 1: Write the proportion equation
   64,870.10 : 97,378.05 = 50,144.30 : x
2. Step 2: Convert to fraction form
   64,870.10/97,378.05 = 50,144.30/x
3. Step 3: Cross multiply
   64,870.10x = 97,378.05 × 50,144.30
4. Step 4: Simplify right side
   64,870.10x = 4,882,954,152.62
5. Step 5: Solve for x
   x = 4,882,954,152.62/64,870.10
6. Step 6: Final answer
   x = 75,272.80