Finding the Fourth Proportional to 90,894.42, 136,130.00 and 87,741.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,894.42 : 136,130.00 = 87,741.50 : x
2. Step 2: Convert to fraction form
   90,894.42/136,130.00 = 87,741.50/x
3. Step 3: Cross multiply
   90,894.42x = 136,130.00 × 87,741.50
4. Step 4: Simplify right side
   90,894.42x = 11,944,249,275.64
5. Step 5: Solve for x
   x = 11,944,249,275.64/90,894.42
6. Step 6: Final answer
   x = 131,407.95