Finding the Fourth Proportional to 140,068.02, 210,144.83 and 83,970.58

Step by Step Solution

1. Step 1: Write the proportion equation
   140,068.02 : 210,144.83 = 83,970.58 : x
2. Step 2: Convert to fraction form
   140,068.02/210,144.83 = 83,970.58/x
3. Step 3: Cross multiply
   140,068.02x = 210,144.83 × 83,970.58
4. Step 4: Simplify right side
   140,068.02x = 17,645,983,259.10
5. Step 5: Solve for x
   x = 17,645,983,259.10/140,068.02
6. Step 6: Final answer
   x = 125,981.53