Finding the Fourth Proportional to 129,436.08, 194,068.46 and 61,978.06

Step by Step Solution

1. Step 1: Write the proportion equation
   129,436.08 : 194,068.46 = 61,978.06 : x
2. Step 2: Convert to fraction form
   129,436.08/194,068.46 = 61,978.06/x
3. Step 3: Cross multiply
   129,436.08x = 194,068.46 × 61,978.06
4. Step 4: Simplify right side
   129,436.08x = 12,027,986,706.89
5. Step 5: Solve for x
   x = 12,027,986,706.89/129,436.08
6. Step 6: Final answer
   x = 92,926.08