Finding the Fourth Proportional to 90,834.18, 136,301.49 and 38,242.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,834.18 : 136,301.49 = 38,242.50 : x
2. Step 2: Convert to fraction form
   90,834.18/136,301.49 = 38,242.50/x
3. Step 3: Cross multiply
   90,834.18x = 136,301.49 × 38,242.50
4. Step 4: Simplify right side
   90,834.18x = 5,212,509,731.33
5. Step 5: Solve for x
   x = 5,212,509,731.33/90,834.18
6. Step 6: Final answer
   x = 57,384.89