Finding the Fourth Proportional to 56,774.34, 78,352.17 and 31,623.78

Step by Step Solution

1. Step 1: Write the proportion equation
   56,774.34 : 78,352.17 = 31,623.78 : x
2. Step 2: Convert to fraction form
   56,774.34/78,352.17 = 31,623.78/x
3. Step 3: Cross multiply
   56,774.34x = 78,352.17 × 31,623.78
4. Step 4: Simplify right side
   56,774.34x = 2,477,791,786.60
5. Step 5: Solve for x
   x = 2,477,791,786.60/56,774.34
6. Step 6: Final answer
   x = 43,642.81