Finding the Fourth Proportional to 76,713.76, 105,897.72 and 51,577.84

Step by Step Solution

1. Step 1: Write the proportion equation
   76,713.76 : 105,897.72 = 51,577.84 : x
2. Step 2: Convert to fraction form
   76,713.76/105,897.72 = 51,577.84/x
3. Step 3: Cross multiply
   76,713.76x = 105,897.72 × 51,577.84
4. Step 4: Simplify right side
   76,713.76x = 5,461,975,658.52
5. Step 5: Solve for x
   x = 5,461,975,658.52/76,713.76
6. Step 6: Final answer
   x = 71,199.43