Finding the Fourth Proportional to 78,045.19, 107,701.53 and 42,234.40

Step by Step Solution

1. Step 1: Write the proportion equation
   78,045.19 : 107,701.53 = 42,234.40 : x
2. Step 2: Convert to fraction form
   78,045.19/107,701.53 = 42,234.40/x
3. Step 3: Cross multiply
   78,045.19x = 107,701.53 × 42,234.40
4. Step 4: Simplify right side
   78,045.19x = 4,548,709,498.63
5. Step 5: Solve for x
   x = 4,548,709,498.63/78,045.19
6. Step 6: Final answer
   x = 58,283.02