Finding the Fourth Proportional to 56,355.38, 77,769.86 and 30,513.80

Step by Step Solution

1. Step 1: Write the proportion equation
   56,355.38 : 77,769.86 = 30,513.80 : x
2. Step 2: Convert to fraction form
   56,355.38/77,769.86 = 30,513.80/x
3. Step 3: Cross multiply
   56,355.38x = 77,769.86 × 30,513.80
4. Step 4: Simplify right side
   56,355.38x = 2,373,053,818.71
5. Step 5: Solve for x
   x = 2,373,053,818.71/56,355.38
6. Step 6: Final answer
   x = 42,108.74