Finding the Fourth Proportional to 88,109,838.39, 121,437,665.32 and 64,538,296.91

Step by Step Solution

1. Step 1: Write the proportion equation
   88,109,838.39 : 121,437,665.32 = 64,538,296.91 : x
2. Step 2: Convert to fraction form
   88,109,838.39/121,437,665.32 = 64,538,296.91/x
3. Step 3: Cross multiply
   88,109,838.39x = 121,437,665.32 × 64,538,296.91
4. Step 4: Simplify right side
   88,109,838.39x = 7,837,380,100,479,369
5. Step 5: Solve for x
   x = 7,837,380,100,479,369/88,109,838.39
6. Step 6: Final answer
   x = 88,950,113.22