Finding the Fourth Proportional to 127,210.69, 190,838.03 and 42,971.47

Step by Step Solution

1. Step 1: Write the proportion equation
   127,210.69 : 190,838.03 = 42,971.47 : x
2. Step 2: Convert to fraction form
   127,210.69/190,838.03 = 42,971.47/x
3. Step 3: Cross multiply
   127,210.69x = 190,838.03 × 42,971.47
4. Step 4: Simplify right side
   127,210.69x = 8,200,590,230.77
5. Step 5: Solve for x
   x = 8,200,590,230.77/127,210.69
6. Step 6: Final answer
   x = 64,464.63