Finding the Fourth Proportional to 91,592.86, 138,118.06 and 90,343.84

Step by Step Solution

1. Step 1: Write the proportion equation
   91,592.86 : 138,118.06 = 90,343.84 : x
2. Step 2: Convert to fraction form
   91,592.86/138,118.06 = 90,343.84/x
3. Step 3: Cross multiply
   91,592.86x = 138,118.06 × 90,343.84
4. Step 4: Simplify right side
   91,592.86x = 12,478,115,913.75
5. Step 5: Solve for x
   x = 12,478,115,913.75/91,592.86
6. Step 6: Final answer
   x = 136,234.59