Finding the Fourth Proportional to 78,226, 107,951.78 and 42,415.96

Step by Step Solution

1. Step 1: Write the proportion equation
   78,226 : 107,951.78 = 42,415.96 : x
2. Step 2: Convert to fraction form
   78,226/107,951.78 = 42,415.96/x
3. Step 3: Cross multiply
   78,226x = 107,951.78 × 42,415.96
4. Step 4: Simplify right side
   78,226x = 4,578,878,382.41
5. Step 5: Solve for x
   x = 4,578,878,382.41/78,226
6. Step 6: Final answer
   x = 58,533.97