Finding the Fourth Proportional to 92,372.08, 138,572.72 and 30,028

Step by Step Solution

1. Step 1: Write the proportion equation
   92,372.08 : 138,572.72 = 30,028 : x
2. Step 2: Convert to fraction form
   92,372.08/138,572.72 = 30,028/x
3. Step 3: Cross multiply
   92,372.08x = 138,572.72 × 30,028
4. Step 4: Simplify right side
   92,372.08x = 4,161,061,636.16
5. Step 5: Solve for x
   x = 4,161,061,636.16/92,372.08
6. Step 6: Final answer
   x = 45,046.75