Finding the Fourth Proportional to 137,549.34, 189,858.60 and 89,810.10

Step by Step Solution

1. Step 1: Write the proportion equation
   137,549.34 : 189,858.60 = 89,810.10 : x
2. Step 2: Convert to fraction form
   137,549.34/189,858.60 = 89,810.10/x
3. Step 3: Cross multiply
   137,549.34x = 189,858.60 × 89,810.10
4. Step 4: Simplify right side
   137,549.34x = 17,051,219,851.86
5. Step 5: Solve for x
   x = 17,051,219,851.86/137,549.34
6. Step 6: Final answer
   x = 123,964.39