Finding the Fourth Proportional to 77,877.47, 107,470.94 and 42,067.51

Step by Step Solution

1. Step 1: Write the proportion equation
   77,877.47 : 107,470.94 = 42,067.51 : x
2. Step 2: Convert to fraction form
   77,877.47/107,470.94 = 42,067.51/x
3. Step 3: Cross multiply
   77,877.47x = 107,470.94 × 42,067.51
4. Step 4: Simplify right side
   77,877.47x = 4,521,034,364.14
5. Step 5: Solve for x
   x = 4,521,034,364.14/77,877.47
6. Step 6: Final answer
   x = 58,053.17