Finding the Fourth Proportional to 138,109,040, 207,173,513.28 and 53,008,496

Step by Step Solution

1. Step 1: Write the proportion equation
   138,109,040 : 207,173,513.28 = 53,008,496 : x
2. Step 2: Convert to fraction form
   138,109,040/207,173,513.28 = 53,008,496/x
3. Step 3: Cross multiply
   138,109,040x = 207,173,513.28 × 53,008,496
4. Step 4: Simplify right side
   138,109,040x = 10,981,956,350,008,826
5. Step 5: Solve for x
   x = 10,981,956,350,008,826/138,109,040
6. Step 6: Final answer
   x = 79,516,564.23