Finding the Fourth Proportional to 56,123.30, 77,450.58 and 30,629.86

Step by Step Solution

1. Step 1: Write the proportion equation
   56,123.30 : 77,450.58 = 30,629.86 : x
2. Step 2: Convert to fraction form
   56,123.30/77,450.58 = 30,629.86/x
3. Step 3: Cross multiply
   56,123.30x = 77,450.58 × 30,629.86
4. Step 4: Simplify right side
   56,123.30x = 2,372,300,422.32
5. Step 5: Solve for x
   x = 2,372,300,422.32/56,123.30
6. Step 6: Final answer
   x = 42,269.44