Finding the Fourth Proportional to 70,510.21, 105,518.20 and 50,541.69

Step by Step Solution

1. Step 1: Write the proportion equation
   70,510.21 : 105,518.20 = 50,541.69 : x
2. Step 2: Convert to fraction form
   70,510.21/105,518.20 = 50,541.69/x
3. Step 3: Cross multiply
   70,510.21x = 105,518.20 × 50,541.69
4. Step 4: Simplify right side
   70,510.21x = 5,333,068,153.76
5. Step 5: Solve for x
   x = 5,333,068,153.76/70,510.21
6. Step 6: Final answer
   x = 75,635.40