Finding the Fourth Proportional to 123,602.90, 170,575.59 and 69,886.76

Step by Step Solution

1. Step 1: Write the proportion equation
   123,602.90 : 170,575.59 = 69,886.76 : x
2. Step 2: Convert to fraction form
   123,602.90/170,575.59 = 69,886.76/x
3. Step 3: Cross multiply
   123,602.90x = 170,575.59 × 69,886.76
4. Step 4: Simplify right side
   123,602.90x = 11,920,974,467.31
5. Step 5: Solve for x
   x = 11,920,974,467.31/123,602.90
6. Step 6: Final answer
   x = 96,445.75