Finding the Fourth Proportional to 116,905,890.72, 161,330,441.94 and 64,698,526.56

Step by Step Solution

1. Step 1: Write the proportion equation
   116,905,890.72 : 161,330,441.94 = 64,698,526.56 : x
2. Step 2: Convert to fraction form
   116,905,890.72/161,330,441.94 = 64,698,526.56/x
3. Step 3: Cross multiply
   116,905,890.72x = 161,330,441.94 × 64,698,526.56
4. Step 4: Simplify right side
   116,905,890.72x = 10,437,841,882,791,628
5. Step 5: Solve for x
   x = 10,437,841,882,791,628/116,905,890.72
6. Step 6: Final answer
   x = 89,284,139.73