Finding the Fourth Proportional to 91,061.56, 136,559.53 and 38,475.15

Step by Step Solution

1. Step 1: Write the proportion equation
   91,061.56 : 136,559.53 = 38,475.15 : x
2. Step 2: Convert to fraction form
   91,061.56/136,559.53 = 38,475.15/x
3. Step 3: Cross multiply
   91,061.56x = 136,559.53 × 38,475.15
4. Step 4: Simplify right side
   91,061.56x = 5,254,148,400.68
5. Step 5: Solve for x
   x = 5,254,148,400.68/91,061.56
6. Step 6: Final answer
   x = 57,698.86