Finding the Fourth Proportional to 78,385.84, 108,173.71 and 42,575.87

Step by Step Solution

1. Step 1: Write the proportion equation
   78,385.84 : 108,173.71 = 42,575.87 : x
2. Step 2: Convert to fraction form
   78,385.84/108,173.71 = 42,575.87/x
3. Step 3: Cross multiply
   78,385.84x = 108,173.71 × 42,575.87
4. Step 4: Simplify right side
   78,385.84x = 4,605,590,138.03
5. Step 5: Solve for x
   x = 4,605,590,138.03/78,385.84
6. Step 6: Final answer
   x = 58,755.39