Finding the Fourth Proportional to 136,332.72, 204,531.58 and 42,838.47

Step by Step Solution

1. Step 1: Write the proportion equation
   136,332.72 : 204,531.58 = 42,838.47 : x
2. Step 2: Convert to fraction form
   136,332.72/204,531.58 = 42,838.47/x
3. Step 3: Cross multiply
   136,332.72x = 204,531.58 × 42,838.47
4. Step 4: Simplify right side
   136,332.72x = 8,761,820,007.43
5. Step 5: Solve for x
   x = 8,761,820,007.43/136,332.72
6. Step 6: Final answer
   x = 64,267.92