Finding the Fourth Proportional to 56,047.84, 77,348.88 and 30,897.28

Step by Step Solution

1. Step 1: Write the proportion equation
   56,047.84 : 77,348.88 = 30,897.28 : x
2. Step 2: Convert to fraction form
   56,047.84/77,348.88 = 30,897.28/x
3. Step 3: Cross multiply
   56,047.84x = 77,348.88 × 30,897.28
4. Step 4: Simplify right side
   56,047.84x = 2,389,870,003.05
5. Step 5: Solve for x
   x = 2,389,870,003.05/56,047.84
6. Step 6: Final answer
   x = 42,639.82