Finding the Fourth Proportional to 116,978,448.39, 161,435,303.64 and 64,767,484.77

Step by Step Solution

1. Step 1: Write the proportion equation
   116,978,448.39 : 161,435,303.64 = 64,767,484.77 : x
2. Step 2: Convert to fraction form
   116,978,448.39/161,435,303.64 = 64,767,484.77/x
3. Step 3: Cross multiply
   116,978,448.39x = 161,435,303.64 × 64,767,484.77
4. Step 4: Simplify right side
   116,978,448.39x = 10,455,758,569,844,026
5. Step 5: Solve for x
   x = 10,455,758,569,844,026/116,978,448.39
6. Step 6: Final answer
   x = 89,381,922.17