Finding the Fourth Proportional to 102,657, 141,666.66 and 55,553

Step by Step Solution

1. Step 1: Write the proportion equation
   102,657 : 141,666.66 = 55,553 : x
2. Step 2: Convert to fraction form
   102,657/141,666.66 = 55,553/x
3. Step 3: Cross multiply
   102,657x = 141,666.66 × 55,553
4. Step 4: Simplify right side
   102,657x = 7,870,007,962.98
5. Step 5: Solve for x
   x = 7,870,007,962.98/102,657
6. Step 6: Final answer
   x = 76,663.14