Finding the Fourth Proportional to 127,109.01, 190,530.45 and 42,840.02

Step by Step Solution

1. Step 1: Write the proportion equation
   127,109.01 : 190,530.45 = 42,840.02 : x
2. Step 2: Convert to fraction form
   127,109.01/190,530.45 = 42,840.02/x
3. Step 3: Cross multiply
   127,109.01x = 190,530.45 × 42,840.02
4. Step 4: Simplify right side
   127,109.01x = 8,162,327,335.96
5. Step 5: Solve for x
   x = 8,162,327,335.96/127,109.01
6. Step 6: Final answer
   x = 64,215.18