Finding the Fourth Proportional to 157,980.83, 218,013.59 and 86,360.83

Step by Step Solution

1. Step 1: Write the proportion equation
   157,980.83 : 218,013.59 = 86,360.83 : x
2. Step 2: Convert to fraction form
   157,980.83/218,013.59 = 86,360.83/x
3. Step 3: Cross multiply
   157,980.83x = 218,013.59 × 86,360.83
4. Step 4: Simplify right side
   157,980.83x = 18,827,834,254.55
5. Step 5: Solve for x
   x = 18,827,834,254.55/157,980.83
6. Step 6: Final answer
   x = 119,177.97