Finding the Fourth Proportional to 65,385.42, 98,095.05 and 21,018.42

Step by Step Solution

1. Step 1: Write the proportion equation
   65,385.42 : 98,095.05 = 21,018.42 : x
2. Step 2: Convert to fraction form
   65,385.42/98,095.05 = 21,018.42/x
3. Step 3: Cross multiply
   65,385.42x = 98,095.05 × 21,018.42
4. Step 4: Simplify right side
   65,385.42x = 2,061,802,960.82
5. Step 5: Solve for x
   x = 2,061,802,960.82/65,385.42
6. Step 6: Final answer
   x = 31,533.07