Finding the Fourth Proportional to 139,010.63, 191,855.16 and 88,028.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,010.63 : 191,855.16 = 88,028.01 : x
2. Step 2: Convert to fraction form
   139,010.63/191,855.16 = 88,028.01/x
3. Step 3: Cross multiply
   139,010.63x = 191,855.16 × 88,028.01
4. Step 4: Simplify right side
   139,010.63x = 16,888,627,943.03
5. Step 5: Solve for x
   x = 16,888,627,943.03/139,010.63
6. Step 6: Final answer
   x = 121,491.63