Finding the Fourth Proportional to 91,156.56, 136,538 and 88,925.82

Step by Step Solution

1. Step 1: Write the proportion equation
   91,156.56 : 136,538 = 88,925.82 : x
2. Step 2: Convert to fraction form
   91,156.56/136,538 = 88,925.82/x
3. Step 3: Cross multiply
   91,156.56x = 136,538 × 88,925.82
4. Step 4: Simplify right side
   91,156.56x = 12,141,753,611.16
5. Step 5: Solve for x
   x = 12,141,753,611.16/91,156.56
6. Step 6: Final answer
   x = 133,196.71