Finding the Fourth Proportional to 78,101.84, 107,780.39 and 42,291.74

Step by Step Solution

1. Step 1: Write the proportion equation
   78,101.84 : 107,780.39 = 42,291.74 : x
2. Step 2: Convert to fraction form
   78,101.84/107,780.39 = 42,291.74/x
3. Step 3: Cross multiply
   78,101.84x = 107,780.39 × 42,291.74
4. Step 4: Simplify right side
   78,101.84x = 4,558,220,447.56
5. Step 5: Solve for x
   x = 4,558,220,447.56/78,101.84
6. Step 6: Final answer
   x = 58,362.52