Finding the Fourth Proportional to 109,623.30, 164,371.14 and 42,985.32

Step by Step Solution

1. Step 1: Write the proportion equation
   109,623.30 : 164,371.14 = 42,985.32 : x
2. Step 2: Convert to fraction form
   109,623.30/164,371.14 = 42,985.32/x
3. Step 3: Cross multiply
   109,623.30x = 164,371.14 × 42,985.32
4. Step 4: Simplify right side
   109,623.30x = 7,065,546,051.66
5. Step 5: Solve for x
   x = 7,065,546,051.66/109,623.30
6. Step 6: Final answer
   x = 64,452.96