Finding the Fourth Proportional to 92,897.56, 128,251.74 and 61,158.72

Step by Step Solution

1. Step 1: Write the proportion equation
   92,897.56 : 128,251.74 = 61,158.72 : x
2. Step 2: Convert to fraction form
   92,897.56/128,251.74 = 61,158.72/x
3. Step 3: Cross multiply
   92,897.56x = 128,251.74 × 61,158.72
4. Step 4: Simplify right side
   92,897.56x = 7,843,712,485.52
5. Step 5: Solve for x
   x = 7,843,712,485.52/92,897.56
6. Step 6: Final answer
   x = 84,434.00