Finding the Fourth Proportional to 78,140.58, 107,834.13 and 42,330.89

Step by Step Solution

1. Step 1: Write the proportion equation
   78,140.58 : 107,834.13 = 42,330.89 : x
2. Step 2: Convert to fraction form
   78,140.58/107,834.13 = 42,330.89/x
3. Step 3: Cross multiply
   78,140.58x = 107,834.13 × 42,330.89
4. Step 4: Simplify right side
   78,140.58x = 4,564,714,156.11
5. Step 5: Solve for x
   x = 4,564,714,156.11/78,140.58
6. Step 6: Final answer
   x = 58,416.69