Finding the Fourth Proportional to 153,976, 212,487.52 and 83,320

Step by Step Solution

1. Step 1: Write the proportion equation
   153,976 : 212,487.52 = 83,320 : x
2. Step 2: Convert to fraction form
   153,976/212,487.52 = 83,320/x
3. Step 3: Cross multiply
   153,976x = 212,487.52 × 83,320
4. Step 4: Simplify right side
   153,976x = 17,704,460,166.40
5. Step 5: Solve for x
   x = 17,704,460,166.40/153,976
6. Step 6: Final answer
   x = 114,981.95