Finding the Fourth Proportional to 76,738.89, 105,916.01 and 51,573.81

Step by Step Solution

1. Step 1: Write the proportion equation
   76,738.89 : 105,916.01 = 51,573.81 : x
2. Step 2: Convert to fraction form
   76,738.89/105,916.01 = 51,573.81/x
3. Step 3: Cross multiply
   76,738.89x = 105,916.01 × 51,573.81
4. Step 4: Simplify right side
   76,738.89x = 5,462,492,175.70
5. Step 5: Solve for x
   x = 5,462,492,175.70/76,738.89
6. Step 6: Final answer
   x = 71,182.84