Finding the Fourth Proportional to 127,089.49, 190,501.21 and 42,820.54

Step by Step Solution

1. Step 1: Write the proportion equation
   127,089.49 : 190,501.21 = 42,820.54 : x
2. Step 2: Convert to fraction form
   127,089.49/190,501.21 = 42,820.54/x
3. Step 3: Cross multiply
   127,089.49x = 190,501.21 × 42,820.54
4. Step 4: Simplify right side
   127,089.49x = 8,157,364,682.85
5. Step 5: Solve for x
   x = 8,157,364,682.85/127,089.49
6. Step 6: Final answer
   x = 64,185.99