Finding the Fourth Proportional to 69,870.09, 104,638.38 and 40,225.76

Step by Step Solution

1. Step 1: Write the proportion equation
   69,870.09 : 104,638.38 = 40,225.76 : x
2. Step 2: Convert to fraction form
   69,870.09/104,638.38 = 40,225.76/x
3. Step 3: Cross multiply
   69,870.09x = 104,638.38 × 40,225.76
4. Step 4: Simplify right side
   69,870.09x = 4,209,158,893.89
5. Step 5: Solve for x
   x = 4,209,158,893.89/69,870.09
6. Step 6: Final answer
   x = 60,242.64