Finding the Fourth Proportional to 77,945.47, 107,564.83 and 42,135.49

Step by Step Solution

1. Step 1: Write the proportion equation
   77,945.47 : 107,564.83 = 42,135.49 : x
2. Step 2: Convert to fraction form
   77,945.47/107,564.83 = 42,135.49/x
3. Step 3: Cross multiply
   77,945.47x = 107,564.83 × 42,135.49
4. Step 4: Simplify right side
   77,945.47x = 4,532,296,818.82
5. Step 5: Solve for x
   x = 4,532,296,818.82/77,945.47
6. Step 6: Final answer
   x = 58,147.02