Finding the Fourth Proportional to 139,933.98, 193,070.55 and 88,855.74

Step by Step Solution

1. Step 1: Write the proportion equation
   139,933.98 : 193,070.55 = 88,855.74 : x
2. Step 2: Convert to fraction form
   139,933.98/193,070.55 = 88,855.74/x
3. Step 3: Cross multiply
   139,933.98x = 193,070.55 × 88,855.74
4. Step 4: Simplify right side
   139,933.98x = 17,155,426,592.46
5. Step 5: Solve for x
   x = 17,155,426,592.46/139,933.98
6. Step 6: Final answer
   x = 122,596.57