Finding the Fourth Proportional to 56,603.14, 78,111.93 and 30,761.49

Step by Step Solution

1. Step 1: Write the proportion equation
   56,603.14 : 78,111.93 = 30,761.49 : x
2. Step 2: Convert to fraction form
   56,603.14/78,111.93 = 30,761.49/x
3. Step 3: Cross multiply
   56,603.14x = 78,111.93 × 30,761.49
4. Step 4: Simplify right side
   56,603.14x = 2,402,839,353.58
5. Step 5: Solve for x
   x = 2,402,839,353.58/56,603.14
6. Step 6: Final answer
   x = 42,450.64