Finding the Fourth Proportional to 56,812.89, 78,401.97 and 34,164.93

Step by Step Solution

1. Step 1: Write the proportion equation
   56,812.89 : 78,401.97 = 34,164.93 : x
2. Step 2: Convert to fraction form
   56,812.89/78,401.97 = 34,164.93/x
3. Step 3: Cross multiply
   56,812.89x = 78,401.97 × 34,164.93
4. Step 4: Simplify right side
   56,812.89x = 2,678,597,816.91
5. Step 5: Solve for x
   x = 2,678,597,816.91/56,812.89
6. Step 6: Final answer
   x = 47,147.71