Finding the Fourth Proportional to 116,978,437.10, 161,435,288.12 and 64,767,473.48

Step by Step Solution

1. Step 1: Write the proportion equation
   116,978,437.10 : 161,435,288.12 = 64,767,473.48 : x
2. Step 2: Convert to fraction form
   116,978,437.10/161,435,288.12 = 64,767,473.48/x
3. Step 3: Cross multiply
   116,978,437.10x = 161,435,288.12 × 64,767,473.48
4. Step 4: Simplify right side
   116,978,437.10x = 10,455,755,740,917,246
5. Step 5: Solve for x
   x = 10,455,755,740,917,246/116,978,437.10
6. Step 6: Final answer
   x = 89,381,906.62