Finding the Fourth Proportional to 123,990.32, 185,915.43 and 113,410.70

Step by Step Solution

1. Step 1: Write the proportion equation
   123,990.32 : 185,915.43 = 113,410.70 : x
2. Step 2: Convert to fraction form
   123,990.32/185,915.43 = 113,410.70/x
3. Step 3: Cross multiply
   123,990.32x = 185,915.43 × 113,410.70
4. Step 4: Simplify right side
   123,990.32x = 21,084,798,127.52
5. Step 5: Solve for x
   x = 21,084,798,127.52/123,990.32
6. Step 6: Final answer
   x = 170,051.98