Finding the Fourth Proportional to 130,137.52, 194,834.40 and 121,870.72

Step by Step Solution

1. Step 1: Write the proportion equation
   130,137.52 : 194,834.40 = 121,870.72 : x
2. Step 2: Convert to fraction form
   130,137.52/194,834.40 = 121,870.72/x
3. Step 3: Cross multiply
   130,137.52x = 194,834.40 × 121,870.72
4. Step 4: Simplify right side
   130,137.52x = 23,744,608,608.77
5. Step 5: Solve for x
   x = 23,744,608,608.77/130,137.52
6. Step 6: Final answer
   x = 182,457.82