Finding the Fourth Proportional to 82,599,231.60, 123,934,276.80 and 42,209,715.60

Step by Step Solution

1. Step 1: Write the proportion equation
   82,599,231.60 : 123,934,276.80 = 42,209,715.60 : x
2. Step 2: Convert to fraction form
   82,599,231.60/123,934,276.80 = 42,209,715.60/x
3. Step 3: Cross multiply
   82,599,231.60x = 123,934,276.80 × 42,209,715.60
4. Step 4: Simplify right side
   82,599,231.60x = 5,231,230,576,819,678
5. Step 5: Solve for x
   x = 5,231,230,576,819,678/82,599,231.60
6. Step 6: Final answer
   x = 63,332,678.47