Finding the Fourth Proportional to 109,389.06, 164,069.72 and 42,875.90

Step by Step Solution

1. Step 1: Write the proportion equation
   109,389.06 : 164,069.72 = 42,875.90 : x
2. Step 2: Convert to fraction form
   109,389.06/164,069.72 = 42,875.90/x
3. Step 3: Cross multiply
   109,389.06x = 164,069.72 × 42,875.90
4. Step 4: Simplify right side
   109,389.06x = 7,034,636,907.75
5. Step 5: Solve for x
   x = 7,034,636,907.75/109,389.06
6. Step 6: Final answer
   x = 64,308.41