Finding the Fourth Proportional to 84,109,035.96, 116,123,011.43 and 64,492,236.45

Step by Step Solution

1. Step 1: Write the proportion equation
   84,109,035.96 : 116,123,011.43 = 64,492,236.45 : x
2. Step 2: Convert to fraction form
   84,109,035.96/116,123,011.43 = 64,492,236.45/x
3. Step 3: Cross multiply
   84,109,035.96x = 116,123,011.43 × 64,492,236.45
4. Step 4: Simplify right side
   84,109,035.96x = 7,489,032,710,107,152
5. Step 5: Solve for x
   x = 7,489,032,710,107,152/84,109,035.96
6. Step 6: Final answer
   x = 89,039,573.75