Finding the Fourth Proportional to 106,820.04, 160,018.72 and 86,851.82

Step by Step Solution

1. Step 1: Write the proportion equation
   106,820.04 : 160,018.72 = 86,851.82 : x
2. Step 2: Convert to fraction form
   106,820.04/160,018.72 = 86,851.82/x
3. Step 3: Cross multiply
   106,820.04x = 160,018.72 × 86,851.82
4. Step 4: Simplify right side
   106,820.04x = 13,897,917,248.99
5. Step 5: Solve for x
   x = 13,897,917,248.99/106,820.04
6. Step 6: Final answer
   x = 130,105.90