Finding the Fourth Proportional to 53,590.89, 73,870.20 and 42,241.98

Step by Step Solution

1. Step 1: Write the proportion equation
   53,590.89 : 73,870.20 = 42,241.98 : x
2. Step 2: Convert to fraction form
   53,590.89/73,870.20 = 42,241.98/x
3. Step 3: Cross multiply
   53,590.89x = 73,870.20 × 42,241.98
4. Step 4: Simplify right side
   53,590.89x = 3,120,423,511.00
5. Step 5: Solve for x
   x = 3,120,423,511.00/53,590.89
6. Step 6: Final answer
   x = 58,226.75