Finding the Fourth Proportional to 91,156.66, 136,777.11 and 34,978.03

Step by Step Solution

1. Step 1: Write the proportion equation
   91,156.66 : 136,777.11 = 34,978.03 : x
2. Step 2: Convert to fraction form
   91,156.66/136,777.11 = 34,978.03/x
3. Step 3: Cross multiply
   91,156.66x = 136,777.11 × 34,978.03
4. Step 4: Simplify right side
   91,156.66x = 4,784,193,856.89
5. Step 5: Solve for x
   x = 4,784,193,856.89/91,156.66
6. Step 6: Final answer
   x = 52,483.21