Finding the Fourth Proportional to 78,010.31, 107,653.59 and 42,200.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,010.31 : 107,653.59 = 42,200.42 : x
2. Step 2: Convert to fraction form
   78,010.31/107,653.59 = 42,200.42/x
3. Step 3: Cross multiply
   78,010.31x = 107,653.59 × 42,200.42
4. Step 4: Simplify right side
   78,010.31x = 4,543,026,174.24
5. Step 5: Solve for x
   x = 4,543,026,174.24/78,010.31
6. Step 6: Final answer
   x = 58,236.23