Finding the Fourth Proportional to 67,970.63, 101,977.61 and 28,517.15

Step by Step Solution

1. Step 1: Write the proportion equation
   67,970.63 : 101,977.61 = 28,517.15 : x
2. Step 2: Convert to fraction form
   67,970.63/101,977.61 = 28,517.15/x
3. Step 3: Cross multiply
   67,970.63x = 101,977.61 × 28,517.15
4. Step 4: Simplify right side
   67,970.63x = 2,908,110,801.01
5. Step 5: Solve for x
   x = 2,908,110,801.01/67,970.63
6. Step 6: Final answer
   x = 42,784.81