Finding the Fourth Proportional to 56,156.48, 77,496.21 and 30,663.37

Step by Step Solution

1. Step 1: Write the proportion equation
   56,156.48 : 77,496.21 = 30,663.37 : x
2. Step 2: Convert to fraction form
   56,156.48/77,496.21 = 30,663.37/x
3. Step 3: Cross multiply
   56,156.48x = 77,496.21 × 30,663.37
4. Step 4: Simplify right side
   56,156.48x = 2,376,294,960.83
5. Step 5: Solve for x
   x = 2,376,294,960.83/56,156.48
6. Step 6: Final answer
   x = 42,315.60