Finding the Fourth Proportional to 56,123.04, 77,449.32 and 30,972

Step by Step Solution

1. Step 1: Write the proportion equation
   56,123.04 : 77,449.32 = 30,972 : x
2. Step 2: Convert to fraction form
   56,123.04/77,449.32 = 30,972/x
3. Step 3: Cross multiply
   56,123.04x = 77,449.32 × 30,972
4. Step 4: Simplify right side
   56,123.04x = 2,398,760,339.04
5. Step 5: Solve for x
   x = 2,398,760,339.04/56,123.04
6. Step 6: Final answer
   x = 42,741.10