Finding the Fourth Proportional to 339,217,139.74, 508,681,099.52 and 129,091,969.82

Step by Step Solution

1. Step 1: Write the proportion equation
   339,217,139.74 : 508,681,099.52 = 129,091,969.82 : x
2. Step 2: Convert to fraction form
   339,217,139.74/508,681,099.52 = 129,091,969.82/x
3. Step 3: Cross multiply
   339,217,139.74x = 508,681,099.52 × 129,091,969.82
4. Step 4: Simplify right side
   339,217,139.74x = 65,666,645,147,240,248
5. Step 5: Solve for x
   x = 65,666,645,147,240,248/339,217,139.74
6. Step 6: Final answer
   x = 193,582,922.13