Finding the Fourth Proportional to 148,140,546.57, 222,552,341.78 and 142,018,449.93

Step by Step Solution

1. Step 1: Write the proportion equation
   148,140,546.57 : 222,552,341.78 = 142,018,449.93 : x
2. Step 2: Convert to fraction form
   148,140,546.57/222,552,341.78 = 142,018,449.93/x
3. Step 3: Cross multiply
   148,140,546.57x = 222,552,341.78 × 142,018,449.93
4. Step 4: Simplify right side
   148,140,546.57x = 31,606,538,607,177,088
5. Step 5: Solve for x
   x = 31,606,538,607,177,088/148,140,546.57
6. Step 6: Final answer
   x = 213,355,082.99