Finding the Fourth Proportional to 102,296.68, 141,186.24 and 64,070.72

Step by Step Solution

1. Step 1: Write the proportion equation
   102,296.68 : 141,186.24 = 64,070.72 : x
2. Step 2: Convert to fraction form
   102,296.68/141,186.24 = 64,070.72/x
3. Step 3: Cross multiply
   102,296.68x = 141,186.24 × 64,070.72
4. Step 4: Simplify right side
   102,296.68x = 9,045,904,050.89
5. Step 5: Solve for x
   x = 9,045,904,050.89/102,296.68
6. Step 6: Final answer
   x = 88,428.13