Finding the Fourth Proportional to 56,626.48, 78,145.05 and 30,785.08

Step by Step Solution

1. Step 1: Write the proportion equation
   56,626.48 : 78,145.05 = 30,785.08 : x
2. Step 2: Convert to fraction form
   56,626.48/78,145.05 = 30,785.08/x
3. Step 3: Cross multiply
   56,626.48x = 78,145.05 × 30,785.08
4. Step 4: Simplify right side
   56,626.48x = 2,405,701,461.93
5. Step 5: Solve for x
   x = 2,405,701,461.93/56,626.48
6. Step 6: Final answer
   x = 42,483.69