Finding the Fourth Proportional to 91,157.16, 136,777.86 and 34,978.53

Step by Step Solution

1. Step 1: Write the proportion equation
   91,157.16 : 136,777.86 = 34,978.53 : x
2. Step 2: Convert to fraction form
   91,157.16/136,777.86 = 34,978.53/x
3. Step 3: Cross multiply
   91,157.16x = 136,777.86 × 34,978.53
4. Step 4: Simplify right side
   91,157.16x = 4,784,288,479.35
5. Step 5: Solve for x
   x = 4,784,288,479.35/91,157.16
6. Step 6: Final answer
   x = 52,483.96