Finding the Fourth Proportional to 112,130.48, 152,667.20 and 111,780.56

Step by Step Solution

1. Step 1: Write the proportion equation
   112,130.48 : 152,667.20 = 111,780.56 : x
2. Step 2: Convert to fraction form
   112,130.48/152,667.20 = 111,780.56/x
3. Step 3: Cross multiply
   112,130.48x = 152,667.20 × 111,780.56
4. Step 4: Simplify right side
   112,130.48x = 17,065,225,109.63
5. Step 5: Solve for x
   x = 17,065,225,109.63/112,130.48
6. Step 6: Final answer
   x = 152,190.78