Finding the Fourth Proportional to 109,387.20, 164,060.55 and 30,485.10

Step by Step Solution

1. Step 1: Write the proportion equation
   109,387.20 : 164,060.55 = 30,485.10 : x
2. Step 2: Convert to fraction form
   109,387.20/164,060.55 = 30,485.10/x
3. Step 3: Cross multiply
   109,387.20x = 164,060.55 × 30,485.10
4. Step 4: Simplify right side
   109,387.20x = 5,001,402,272.81
5. Step 5: Solve for x
   x = 5,001,402,272.81/109,387.20
6. Step 6: Final answer
   x = 45,722.01