Finding the Fourth Proportional to 108,931.59, 150,340.73 and 61,188.57

Step by Step Solution

1. Step 1: Write the proportion equation
   108,931.59 : 150,340.73 = 61,188.57 : x
2. Step 2: Convert to fraction form
   108,931.59/150,340.73 = 61,188.57/x
3. Step 3: Cross multiply
   108,931.59x = 150,340.73 × 61,188.57
4. Step 4: Simplify right side
   108,931.59x = 9,199,133,975.51
5. Step 5: Solve for x
   x = 9,199,133,975.51/108,931.59
6. Step 6: Final answer
   x = 84,448.73