Finding the Fourth Proportional to 67,071.95, 100,513.61 and 52,970.05

Step by Step Solution

1. Step 1: Write the proportion equation
   67,071.95 : 100,513.61 = 52,970.05 : x
2. Step 2: Convert to fraction form
   67,071.95/100,513.61 = 52,970.05/x
3. Step 3: Cross multiply
   67,071.95x = 100,513.61 × 52,970.05
4. Step 4: Simplify right side
   67,071.95x = 5,324,211,006.81
5. Step 5: Solve for x
   x = 5,324,211,006.81/67,071.95
6. Step 6: Final answer
   x = 79,380.59