Finding the Fourth Proportional to 75,086.30, 103,630.73 and 42,820.98

Step by Step Solution

1. Step 1: Write the proportion equation
   75,086.30 : 103,630.73 = 42,820.98 : x
2. Step 2: Convert to fraction form
   75,086.30/103,630.73 = 42,820.98/x
3. Step 3: Cross multiply
   75,086.30x = 103,630.73 × 42,820.98
4. Step 4: Simplify right side
   75,086.30x = 4,437,569,416.72
5. Step 5: Solve for x
   x = 4,437,569,416.72/75,086.30
6. Step 6: Final answer
   x = 59,099.59