Finding the Fourth Proportional to 83,105,667.20, 124,660,639.20 and 39,376,164.80

Step by Step Solution

1. Step 1: Write the proportion equation
   83,105,667.20 : 124,660,639.20 = 39,376,164.80 : x
2. Step 2: Convert to fraction form
   83,105,667.20/124,660,639.20 = 39,376,164.80/x
3. Step 3: Cross multiply
   83,105,667.20x = 124,660,639.20 × 39,376,164.80
4. Step 4: Simplify right side
   83,105,667.20x = 4,908,657,873,212,540
5. Step 5: Solve for x
   x = 4,908,657,873,212,540/83,105,667.20
6. Step 6: Final answer
   x = 59,065,260.39