Finding the Fourth Proportional to 92,061.29, 138,092.07 and 28,019.99

Step by Step Solution

1. Step 1: Write the proportion equation
   92,061.29 : 138,092.07 = 28,019.99 : x
2. Step 2: Convert to fraction form
   92,061.29/138,092.07 = 28,019.99/x
3. Step 3: Cross multiply
   92,061.29x = 138,092.07 × 28,019.99
4. Step 4: Simplify right side
   92,061.29x = 3,869,338,420.48
5. Step 5: Solve for x
   x = 3,869,338,420.48/92,061.29
6. Step 6: Final answer
   x = 42,030.03