Finding the Fourth Proportional to 76,737.89, 105,914.63 and 51,572.81

Step by Step Solution

1. Step 1: Write the proportion equation
   76,737.89 : 105,914.63 = 51,572.81 : x
2. Step 2: Convert to fraction form
   76,737.89/105,914.63 = 51,572.81/x
3. Step 3: Cross multiply
   76,737.89x = 105,914.63 × 51,572.81
4. Step 4: Simplify right side
   76,737.89x = 5,462,314,831.35
5. Step 5: Solve for x
   x = 5,462,314,831.35/76,737.89
6. Step 6: Final answer
   x = 71,181.46