Finding the Fourth Proportional to 127,002.78, 190,525.23 and 42,770.07

Step by Step Solution

1. Step 1: Write the proportion equation
   127,002.78 : 190,525.23 = 42,770.07 : x
2. Step 2: Convert to fraction form
   127,002.78/190,525.23 = 42,770.07/x
3. Step 3: Cross multiply
   127,002.78x = 190,525.23 × 42,770.07
4. Step 4: Simplify right side
   127,002.78x = 8,148,777,423.87
5. Step 5: Solve for x
   x = 8,148,777,423.87/127,002.78
6. Step 6: Final answer
   x = 64,162.20