Finding the Fourth Proportional to 56,198.47, 77,551.59 and 30,705.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,198.47 : 77,551.59 = 30,705.72 : x
2. Step 2: Convert to fraction form
   56,198.47/77,551.59 = 30,705.72/x
3. Step 3: Cross multiply
   56,198.47x = 77,551.59 × 30,705.72
4. Step 4: Simplify right side
   56,198.47x = 2,381,277,020.34
5. Step 5: Solve for x
   x = 2,381,277,020.34/56,198.47
6. Step 6: Final answer
   x = 42,372.63