Finding the Fourth Proportional to 78,156.84, 107,855.94 and 42,346.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,156.84 : 107,855.94 = 42,346.68 : x
2. Step 2: Convert to fraction form
   78,156.84/107,855.94 = 42,346.68/x
3. Step 3: Cross multiply
   78,156.84x = 107,855.94 × 42,346.68
4. Step 4: Simplify right side
   78,156.84x = 4,567,340,977.28
5. Step 5: Solve for x
   x = 4,567,340,977.28/78,156.84
6. Step 6: Final answer
   x = 58,438.15