Finding the Fourth Proportional to 56,196.95, 77,557.16 and 30,707.19

Step by Step Solution

1. Step 1: Write the proportion equation
   56,196.95 : 77,557.16 = 30,707.19 : x
2. Step 2: Convert to fraction form
   56,196.95/77,557.16 = 30,707.19/x
3. Step 3: Cross multiply
   56,196.95x = 77,557.16 × 30,707.19
4. Step 4: Simplify right side
   56,196.95x = 2,381,562,447.98
5. Step 5: Solve for x
   x = 2,381,562,447.98/56,196.95
6. Step 6: Final answer
   x = 42,378.86