Finding the Fourth Proportional to 139,565.68, 192,538.47 and 93,009.01

Step by Step Solution

1. Step 1: Write the proportion equation
   139,565.68 : 192,538.47 = 93,009.01 : x
2. Step 2: Convert to fraction form
   139,565.68/192,538.47 = 93,009.01/x
3. Step 3: Cross multiply
   139,565.68x = 192,538.47 × 93,009.01
4. Step 4: Simplify right side
   139,565.68x = 17,907,812,186.89
5. Step 5: Solve for x
   x = 17,907,812,186.89/139,565.68
6. Step 6: Final answer
   x = 128,311.00