Finding the Fourth Proportional to 51,018.33, 70,439.60 and 45,623.99

Step by Step Solution

1. Step 1: Write the proportion equation
   51,018.33 : 70,439.60 = 45,623.99 : x
2. Step 2: Convert to fraction form
   51,018.33/70,439.60 = 45,623.99/x
3. Step 3: Cross multiply
   51,018.33x = 70,439.60 × 45,623.99
4. Step 4: Simplify right side
   51,018.33x = 3,213,735,025.69
5. Step 5: Solve for x
   x = 3,213,735,025.69/51,018.33
6. Step 6: Final answer
   x = 62,991.77