Finding the Fourth Proportional to 78,011.24, 107,654.96 and 42,200.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,011.24 : 107,654.96 = 42,200.72 : x
2. Step 2: Convert to fraction form
   78,011.24/107,654.96 = 42,200.72/x
3. Step 3: Cross multiply
   78,011.24x = 107,654.96 × 42,200.72
4. Step 4: Simplify right side
   78,011.24x = 4,543,116,823.57
5. Step 5: Solve for x
   x = 4,543,116,823.57/78,011.24
6. Step 6: Final answer
   x = 58,236.70