Finding the Fourth Proportional to 90,980.05, 136,533.39 and 37,672.30

Step by Step Solution

1. Step 1: Write the proportion equation
   90,980.05 : 136,533.39 = 37,672.30 : x
2. Step 2: Convert to fraction form
   90,980.05/136,533.39 = 37,672.30/x
3. Step 3: Cross multiply
   90,980.05x = 136,533.39 × 37,672.30
4. Step 4: Simplify right side
   90,980.05x = 5,143,526,828.10
5. Step 5: Solve for x
   x = 5,143,526,828.10/90,980.05
6. Step 6: Final answer
   x = 56,534.67