Finding the Fourth Proportional to 109,421.03, 164,145.88 and 42,852.50

Step by Step Solution

1. Step 1: Write the proportion equation
   109,421.03 : 164,145.88 = 42,852.50 : x
2. Step 2: Convert to fraction form
   109,421.03/164,145.88 = 42,852.50/x
3. Step 3: Cross multiply
   109,421.03x = 164,145.88 × 42,852.50
4. Step 4: Simplify right side
   109,421.03x = 7,034,061,518.80
5. Step 5: Solve for x
   x = 7,034,061,518.80/109,421.03
6. Step 6: Final answer
   x = 64,284.37