Finding the Fourth Proportional to 159,445,498.56, 220,034,786.88 and 86,106,641.28

Step by Step Solution

1. Step 1: Write the proportion equation
   159,445,498.56 : 220,034,786.88 = 86,106,641.28 : x
2. Step 2: Convert to fraction form
   159,445,498.56/220,034,786.88 = 86,106,641.28/x
3. Step 3: Cross multiply
   159,445,498.56x = 220,034,786.88 × 86,106,641.28
4. Step 4: Simplify right side
   159,445,498.56x = 18,946,456,462,997,412
5. Step 5: Solve for x
   x = 18,946,456,462,997,412/159,445,498.56
6. Step 6: Final answer
   x = 118,827,164.35