Finding the Fourth Proportional to 118,801.98, 177,710.49 and 90,507.96

Step by Step Solution

1. Step 1: Write the proportion equation
   118,801.98 : 177,710.49 = 90,507.96 : x
2. Step 2: Convert to fraction form
   118,801.98/177,710.49 = 90,507.96/x
3. Step 3: Cross multiply
   118,801.98x = 177,710.49 × 90,507.96
4. Step 4: Simplify right side
   118,801.98x = 16,084,213,920.50
5. Step 5: Solve for x
   x = 16,084,213,920.50/118,801.98
6. Step 6: Final answer
   x = 135,386.75