Finding the Fourth Proportional to 28,111.23, 42,173.76 and 19,807.46

Step by Step Solution

1. Step 1: Write the proportion equation
   28,111.23 : 42,173.76 = 19,807.46 : x
2. Step 2: Convert to fraction form
   28,111.23/42,173.76 = 19,807.46/x
3. Step 3: Cross multiply
   28,111.23x = 42,173.76 × 19,807.46
4. Step 4: Simplify right side
   28,111.23x = 835,355,056.46
5. Step 5: Solve for x
   x = 835,355,056.46/28,111.23
6. Step 6: Final answer
   x = 29,716.07