Finding the Fourth Proportional to 55,429, 76,493.70 and 30,280.12

Step by Step Solution

1. Step 1: Write the proportion equation
   55,429 : 76,493.70 = 30,280.12 : x
2. Step 2: Convert to fraction form
   55,429/76,493.70 = 30,280.12/x
3. Step 3: Cross multiply
   55,429x = 76,493.70 × 30,280.12
4. Step 4: Simplify right side
   55,429x = 2,316,238,415.24
5. Step 5: Solve for x
   x = 2,316,238,415.24/55,429
6. Step 6: Final answer
   x = 41,787.48