Finding the Fourth Proportional to 78,143.34, 107,837.69 and 42,333.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,143.34 : 107,837.69 = 42,333.50 : x
2. Step 2: Convert to fraction form
   78,143.34/107,837.69 = 42,333.50/x
3. Step 3: Cross multiply
   78,143.34x = 107,837.69 × 42,333.50
4. Step 4: Simplify right side
   78,143.34x = 4,565,146,098.76
5. Step 5: Solve for x
   x = 4,565,146,098.76/78,143.34
6. Step 6: Final answer
   x = 58,420.16