Finding the Fourth Proportional to 82,947,145.60, 124,404,129.60 and 39,816,265.60

Step by Step Solution

1. Step 1: Write the proportion equation
   82,947,145.60 : 124,404,129.60 = 39,816,265.60 : x
2. Step 2: Convert to fraction form
   82,947,145.60/124,404,129.60 = 39,816,265.60/x
3. Step 3: Cross multiply
   82,947,145.60x = 124,404,129.60 × 39,816,265.60
4. Step 4: Simplify right side
   82,947,145.60x = 4,953,307,865,890,422
5. Step 5: Solve for x
   x = 4,953,307,865,890,422/82,947,145.60
6. Step 6: Final answer
   x = 59,716,435.45