Finding the Fourth Proportional to 99,448.96, 149,199.60 and 37,120

Step by Step Solution

1. Step 1: Write the proportion equation
   99,448.96 : 149,199.60 = 37,120 : x
2. Step 2: Convert to fraction form
   99,448.96/149,199.60 = 37,120/x
3. Step 3: Cross multiply
   99,448.96x = 149,199.60 × 37,120
4. Step 4: Simplify right side
   99,448.96x = 5,538,289,152
5. Step 5: Solve for x
   x = 5,538,289,152/99,448.96
6. Step 6: Final answer
   x = 55,689.76