Finding the Fourth Proportional to 67,820.56, 93,573.63 and 39,138.25

Step by Step Solution

1. Step 1: Write the proportion equation
   67,820.56 : 93,573.63 = 39,138.25 : x
2. Step 2: Convert to fraction form
   67,820.56/93,573.63 = 39,138.25/x
3. Step 3: Cross multiply
   67,820.56x = 93,573.63 × 39,138.25
4. Step 4: Simplify right side
   67,820.56x = 3,662,308,124.35
5. Step 5: Solve for x
   x = 3,662,308,124.35/67,820.56
6. Step 6: Final answer
   x = 53,999.97