Finding the Fourth Proportional to 56,854,047.32, 78,458,585.28 and 30,748,565.15

Step by Step Solution

1. Step 1: Write the proportion equation
   56,854,047.32 : 78,458,585.28 = 30,748,565.15 : x
2. Step 2: Convert to fraction form
   56,854,047.32/78,458,585.28 = 30,748,565.15/x
3. Step 3: Cross multiply
   56,854,047.32x = 78,458,585.28 × 30,748,565.15
4. Step 4: Simplify right side
   56,854,047.32x = 2,412,488,921,058,911
5. Step 5: Solve for x
   x = 2,412,488,921,058,911/56,854,047.32
6. Step 6: Final answer
   x = 42,433,019.90