Finding the Fourth Proportional to 97,411.56, 134,426.82 and 57,117

Step by Step Solution

1. Step 1: Write the proportion equation
   97,411.56 : 134,426.82 = 57,117 : x
2. Step 2: Convert to fraction form
   97,411.56/134,426.82 = 57,117/x
3. Step 3: Cross multiply
   97,411.56x = 134,426.82 × 57,117
4. Step 4: Simplify right side
   97,411.56x = 7,678,056,677.94
5. Step 5: Solve for x
   x = 7,678,056,677.94/97,411.56
6. Step 6: Final answer
   x = 78,820.80