Finding the Fourth Proportional to 67,761.46, 101,561.55 and 51,066.45

Step by Step Solution

1. Step 1: Write the proportion equation
   67,761.46 : 101,561.55 = 51,066.45 : x
2. Step 2: Convert to fraction form
   67,761.46/101,561.55 = 51,066.45/x
3. Step 3: Cross multiply
   67,761.46x = 101,561.55 × 51,066.45
4. Step 4: Simplify right side
   67,761.46x = 5,186,387,623.50
5. Step 5: Solve for x
   x = 5,186,387,623.50/67,761.46
6. Step 6: Final answer
   x = 76,538.90