Finding the Fourth Proportional to 144,879,864.72, 199,868,259.42 and 86,109,128.88

Step by Step Solution

1. Step 1: Write the proportion equation
   144,879,864.72 : 199,868,259.42 = 86,109,128.88 : x
2. Step 2: Convert to fraction form
   144,879,864.72/199,868,259.42 = 86,109,128.88/x
3. Step 3: Cross multiply
   144,879,864.72x = 199,868,259.42 × 86,109,128.88
4. Step 4: Simplify right side
   144,879,864.72x = 17,210,481,709,418,052
5. Step 5: Solve for x
   x = 17,210,481,709,418,052/144,879,864.72
6. Step 6: Final answer
   x = 118,791,398.26