Finding the Fourth Proportional to 142,543,887.50, 196,710,566.43 and 77,353,791.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,543,887.50 : 196,710,566.43 = 77,353,791.50 : x
2. Step 2: Convert to fraction form
   142,543,887.50/196,710,566.43 = 77,353,791.50/x
3. Step 3: Cross multiply
   142,543,887.50x = 196,710,566.43 × 77,353,791.50
4. Step 4: Simplify right side
   142,543,887.50x = 15,216,308,140,489,568
5. Step 5: Solve for x
   x = 15,216,308,140,489,568/142,543,887.50
6. Step 6: Final answer
   x = 106,748,233.18