Finding the Fourth Proportional to 42,386,588,429.30, 63,579,882,643.95 and 12,942,584,026.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,386,588,429.30 : 63,579,882,643.95 = 12,942,584,026.10 : x
2. Step 2: Convert to fraction form
   42,386,588,429.30/63,579,882,643.95 = 12,942,584,026.10/x
3. Step 3: Cross multiply
   42,386,588,429.30x = 63,579,882,643.95 × 12,942,584,026.10
4. Step 4: Simplify right side
   42,386,588,429.30x = 822,887,973,488,899,915,776
5. Step 5: Solve for x
   x = 822,887,973,488,899,915,776/42,386,588,429.30
6. Step 6: Final answer
   x = 19,413,876,039.15