Finding the Fourth Proportional to 72,892.51, 109,345.03 and 20,301.99

Step by Step Solution

1. Step 1: Write the proportion equation
   72,892.51 : 109,345.03 = 20,301.99 : x
2. Step 2: Convert to fraction form
   72,892.51/109,345.03 = 20,301.99/x
3. Step 3: Cross multiply
   72,892.51x = 109,345.03 × 20,301.99
4. Step 4: Simplify right side
   72,892.51x = 2,219,921,705.61
5. Step 5: Solve for x
   x = 2,219,921,705.61/72,892.51
6. Step 6: Final answer
   x = 30,454.73