Finding the Fourth Proportional to 55,377, 76,421.91 and 30,228.12

Step by Step Solution

1. Step 1: Write the proportion equation
   55,377 : 76,421.91 = 30,228.12 : x
2. Step 2: Convert to fraction form
   55,377/76,421.91 = 30,228.12/x
3. Step 3: Cross multiply
   55,377x = 76,421.91 × 30,228.12
4. Step 4: Simplify right side
   55,377x = 2,310,090,666.11
5. Step 5: Solve for x
   x = 2,310,090,666.11/55,377
6. Step 6: Final answer
   x = 41,715.71