Finding the Fourth Proportional to 137,558.79, 189,761.27 and 89,840.07

Step by Step Solution

1. Step 1: Write the proportion equation
   137,558.79 : 189,761.27 = 89,840.07 : x
2. Step 2: Convert to fraction form
   137,558.79/189,761.27 = 89,840.07/x
3. Step 3: Cross multiply
   137,558.79x = 189,761.27 × 89,840.07
4. Step 4: Simplify right side
   137,558.79x = 17,048,165,330.89
5. Step 5: Solve for x
   x = 17,048,165,330.89/137,558.79
6. Step 6: Final answer
   x = 123,933.67