Finding the Fourth Proportional to 53,479.68, 74,139.59 and 50,635.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,479.68 : 74,139.59 = 50,635.50 : x
2. Step 2: Convert to fraction form
   53,479.68/74,139.59 = 50,635.50/x
3. Step 3: Cross multiply
   53,479.68x = 74,139.59 × 50,635.50
4. Step 4: Simplify right side
   53,479.68x = 3,754,094,956.27
5. Step 5: Solve for x
   x = 3,754,094,956.27/53,479.68
6. Step 6: Final answer
   x = 70,196.66