Finding the Fourth Proportional to 64,145.25, 88,520.58 and 42,975.09

Step by Step Solution

1. Step 1: Write the proportion equation
   64,145.25 : 88,520.58 = 42,975.09 : x
2. Step 2: Convert to fraction form
   64,145.25/88,520.58 = 42,975.09/x
3. Step 3: Cross multiply
   64,145.25x = 88,520.58 × 42,975.09
4. Step 4: Simplify right side
   64,145.25x = 3,804,179,892.35
5. Step 5: Solve for x
   x = 3,804,179,892.35/64,145.25
6. Step 6: Final answer
   x = 59,305.71